AB interface manual.pdf

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Because of the variety of uses for the products described in this publication,

those responsible for the application and use of this control equipment mustsatisfy themselves that all necessary steps have been taken to assure that each

application and use meets all performance and safety requirements, including

any applicable laws, regulations, codes and standards.

The illustrations, charts, sample programs and layout examples shown in thisguide are intended solely for purposes of example. Since there are manyvariables and requirements associated with any particular installation,Allen-Bradley does not assume responsibility or liability (to includeintellectual property liability) for actual use based upon the examples shownin this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,Installation, and Maintenance of Solid-State Control(available from yourlocal Allen-Bradley office), describes some important differences betweensolid-state equipment and electromechanical devices that should be takeninto consideration when applying products such as those described in thispublication.

Reproduction of the contents of this copyrighted publication, in whole or inpart, without written permission of Allen-Bradley Company, Inc., isprohibited.

Throughout this manual we use notes to make you aware of safetyconsiderations:

!ATTENTION:Identifies information about practices orcircumstances that can lead to personal injury or death, propertydamage, or economic loss.

Attentions help you:

identify a hazard

avoid the hazard

recognize the consequences

Important: Identifies information that is especially important for successful

application and understanding of the product.

PLC, PLC2, PLC3, and PLC5 are registered trademarks of Allen-Bradley Company, Inc.

PLC5/250, SLC, SLC 500, SLC 5/01, SLC 5/02, SLC 5/03, PanelView, RediPANEL, DTAM, DH+, Data Highway Plus, and Dataliner

are trademarks of Allen-Bradley Company, Inc.

IBM is a registered trademark of International Business Machines, Incorporated.

Hayes Smartmodem 1200 is a trademark of Hayes Microcomputer Products, Inc.

Procomm is a registered trademark of Datastorm Technologies, Inc.

Microsoft Windows is a trademark of Microsoft Corporation


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The information below summarizes the changes to this manual since the lastprinting as 17476.12 in March 1994.

To help you find new information and updated information in this release ofthe manual, we have included change bars as shown to the right of thisparagraph.

The table below lists sections that document new features and additionalinformation about existing features, and shows where to find this new

information.


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Table of Contents


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Table of Contents


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Table of Contents


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Table of Contents


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Table of Contents


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Read this preface to familiarize yourself with the rest of the manual. Thispreface covers the following topics:

who should use this manual

the purpose of this manual

terms and abbreviations

conventions used in this manual

AllenBradley support

Use this manual if you are responsible for designing, installing,

programming, or troubleshooting control systems that use AllenBradleysmall logic controllers.

You should have a basic understanding of SLC 500products, DF1communications protocol, and DH-485 network communications. If you donot, contact your local AllenBradley representative for information onavailable training courses before using this product.

We recommend that you reviewAPS Quick Start for New Users, DocumentNumber 9939-APSQS, or The Getting Started Guide for HHT, CatalogNumber 1747NM009 before using the software.

This manual is areference guide for the DH485/RS232C InterfaceModule. It describes the procedures you use to install and configure yourinterface module for application with PLCs and SLCs.


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- -


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The following documents contain additional information concerning

AllenBradley SLC and PLC

products. To obtain a copy, contact your locaAllenBradley office or distributor.

The following terms and abbreviations are specific to this product. For acomplete listing of AllenBradley terminology, refer to theAllenBradleyIndustrial Automation Glossary, Publication Number AG7.1.

ASCII Terminal an industrial terminal, workstation, or personalcomputer with terminal mode software (such as PBASE or PROCOMM)that communicates in alphanumeric mode.

Backplane a printed circuit board, at the back of a chassis, that provideselectrical interconnection between the modules inserted into the chassis.

DF1 a serial communication protocol capable of delimiting messages,controlling message flow, detecting and signalling errors, and retrying aftererrors are detected. See half- and full-duplex.

DH-485 Link Data Highway485 link. An AllenBradley tokenpassingbaseband link for a local area network based on the RS485 standard.


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Full-Duplex a mode of operation for a pointtopoint link with twophysical circuits, in which messages or transmission blocks can be sent inboth directions at the same time.

Half-Duplex a mode of operation for a pointtopoint or multipointbaseband link with two physical circuits, in which messages or transmissionblocks can be sent in one direction or the other, but not both at the same time.

Modem Modulator/demodulator. Equipment that connects data terminalequipment to a communication line.

RAM Random Access Memory. The type of memory in which eachstorage location is by X/Y coordinates, as in core or semiconductor memory.(Tape or bubble memory cannot be random access.) Thus, the data accesstime is independent of the location of the data. Unless stated otherwise,RAM usually implies read/write and volatile.

RS-232C an EIA standard that specifies electrical, mechanical, andfunctional characteristics for serial binary communication circuits in apointtopoint link.

RS-422 an EIA standard that specifies electrical characteristics ofbalancedvoltage digital interface circuits in a pointtopoint link.

RS-423 an EIA standard that specifies electrical characteristics ofunbalanced voltage digital interface circuits in a pointtopoint link.

RS-485 an EIA standard that specifies mechanical and functionalcharacteristics for digital interface circuits. This standard is used in

combination with either RS422 or RS423.

SLC 500the SLC 500 family of fixed and modular controllers.

The following conventions are used throughout this manual:

Bulleted lists such as this one provide information, not procedural steps.

Numbered lists provide sequential steps or hierarchical information.

Italictype is used for emphasis.

Text in thisfontindicates words or phrases you should type.

Key names match the names shown and appear in bold, capital letters

within brackets (for example, [ENTER]). A function key icon matches the

name of the function key you should press, such as

.


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AllenBradley offers support services worldwide, with over 75 Sales/SupporOffices, 512 authorized Distributors and 260 authorized Systems Integratorslocated throughout the United States alone, plus AllenBradley

representatives in every major country in the world.

Contact your local AllenBradley representative for:

sales and order support

product technical training

warranty support

support service agreements

If you need to contact AllenBradley for technical assistance, please reviewthe information in the Troubleshooting chapter first. Then call your localAllenBradley representative.

If you find a problem with this manual, please notify us of it on the enclosedPublication Problem Report.

If you have any suggestions for how this manual could be made more usefulto you, please contact us at the address below:

Allen-Bradley Company, Inc.Control And Information GroupTechnical Communication, Dept. A602V, T122P.O. Box 2086Milwaukee, WI 53201-2086


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Modem

APS

Interface Module(1747-KE)

LinkCoupler

Link Coupler(1747-AIC)

LinkCoupler

Modem

This chapter provides:

an overview of the interface module

features (communication ports, LEDs, and jumpers)

guidelines outlining the type of modems you can use with the module

a brief discussion on using APS with your module

typical configurations

The DH-485/RS-232C Interface Module, Catalog Number 1747-KE, is a

communications interface module that acts as a bridge between DH-485networks and devices requiring DF1 protocol. The DF1 port on the interfacemodule can be configured for RS-232/423, RS-422, or RS-485 devices.

Residing in an SLC 500 chassis, the module is ideally used as an interfacemodule, linking remote DH-485 networks via a modem to a central host.


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The features of the module are called out below:

DH-485/RS-232C

There are three communication ports on the front of the module. Thelocation, name, and pin numbers of these ports are listed on the inside of themodule door. They are CONFIG, DF1, and DH485.

CONFIG -used to configure the module with an ASCII terminal. Thisserial port accommodates RS-232/423, RS-422, and RS-485 communicationinterfaces. The CONFIG port is capable of operating at 300, 600, 1200,2400, 4800, 9600, and 19200 baud. It is electrically isolated to 500V dc.

DF1 -used to interface the module to a modem or other user devices usingDF1 protocol. This serial port accommodates RS-232/423, RS-422, andRS-485 communication interfaces. The DF1 port is capable of operating at300, 600, 1200, 2400, 4800, 9600, and 19200 baud. It is electrically isolated

to 500V dc.

DH485 -used to interface the module with the DH-485 network. This port isnot isolated and cannot directly drive a multinode DH-485 network. Youmust use a 1747-AIC link coupler to connect this port to a DH-485 networkthat includes multiple SLC 500 processors.

The Catalog Number 1747-C11 or Catalog Number 1747-C13 cables canconnect the interface modules DH485 port to a 1747-AIC link coupler. TheCatalog Number 1747-C13 cable can also connect the modules DH485 portdirectly to a single SLC processor. See page 4-12for cable connections.


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DH-485/RS-232C

ACT

485

CFG

DF1

FAULT

BA LOW

H/D

F/D

INTERFACE

There are eight LEDs on the front of the module. These LEDs are used for

module diagnostics and operator interface. Shown below are the LEDs andtheir descriptions.


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JW1 allows you to select the communication interface for the CONFIG

port. Refer to page4-5.

JW2 allows you to select the communication interface for the DF1 port.Refer to page4-6.

JW4 allows you to select the functionality and mode of the interfacemodule. The orientation of the jumper determines the modules

functionality. A horizontal orientation gives the module functionalityequivalent to a series A module (module configuration ID=4209), while avertical orientation of the jumper accesses the added functionality of a seriesB module (module configuration ID=3509).

The position of the jumper determines the modules mode (Configuration orRun), and thus, which method is used to configure the module (ASCIIterminal or backplane communications). Refer to chapter 4.

JW1

JW2

MotherBoard

DaughterBoard


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The module can be connected to most types of dial-up network or directconnect modems.

Important: Some modems are designed to respond to the DTR signal byanswering the phone whether it is ringing or not. Since themodule asserts DTR at all times (except during the hang-upsequence), the phone appears to be busy at all times. Do notuse the interface module with any type of modem that answersthe phone as soon as DTR is asserted.

The type of modems you can use are:

Manual typically acoustically coupled modems. A person on each endof the phone line establishes the connection. They then insert thehandsets into an acoustic coupler to complete the connection.

DTE Controlled Answer these unattended modems are attacheddirectly to the phone lines. The interface module acts as the Data

Terminal Equipment (DTE), which controls the modem via the DTR,DSR, and DCD signals. The module incorporates timeouts and tests toproperly operate these types of modems.

Auto Answer These modems have self-contained timeouts and tests.They can answer and hang up the phone automatically. The module hasno means of controlling an auto-dial modem, but it can be used inconjunction with a separate auto-dialer.

Direct Connect These modems connect to a dedicated, leased phoneline and remain active at all times.

APS version 3.01 and later supports DF1 communications directly from your

computers serial communication port. Connecting a modem to this portallows you to call remote networks and control them as if you wereconnected locally.

APS

For more information, refer to the chapter on configuring onlinecommunicationsin yourAdvanced Programming Software User Manual,Document Number 9399-APSUM.


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The following configurations illustrate some of the possible uses for themodule.

APS

APS


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APS


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APS


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This chapter can help you to get started using the DH485/RS232CInterface Module. The procedures included here assume that you have abasic understanding of SLC 500 products. You should understand electronicprocess control and be able to interpret the ladder logic instructions requiredto generate the electronic signals that control your application.

Because it is a startup guide, this chapter does notcontain detailedexplanations about the procedures listed. It does, however, reference otherchapters in this book where you can get more information about applying theprocedures described in each step.

If you have any questions or are unfamiliar with the terms used or conceptspresented in the procedural steps,

always read the referenced chaptersandother recommended documentation before trying to apply the information.

This chapter:

tells you what tools and equipment you need

lists preliminary considerations

explains how to install the module

describes when to configure the module

discusses system powerup procedures

Have the following tools and equipment ready:

medium blade screwdriver

programming equipment (Advanced Programming Software [APS] forpersonal computers or a HandHeld Terminal [HHT])


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!ATTENTION:


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!


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This chapter explains:

full- and half-duplex DF1 communication

local and remote half-duplex operation

communicating with master and slave DH-485 devices

communicating with a modem

The module supports full-duplex DF1 protocol and half-duplex DF1 slaveprotocol on its RS-232 connection to the host computer (using the DF1 Port).

The details of these protocols can be found in theData Highway/DataHighway Plus/DH-485 Protocol and Command Set Manual, PublicationNumber 1770-6.5.16.

Full-duplex DF1 protocol is provided for applications where highperformance peer-to-peer communication is needed.

In full-duplex mode, the module can send embedded responses. If theEmbedded Response Detect option is set to Auto Detect Embedded Response(page59or67), the module will not send embedded responses until itreceives one from the host. The module makes an assumption that if a hostcomputer sends embedded responses, it can also receive them.

In full-duplex mode, the destination address in a packet sent from the hostcomputer to the module is the address of the DH-485 node for which thepacket is intended. The source address in packets received by the hostcomputer from the module is the node address of the sender.

APS


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APS

The module provides two modes of half-duplex addressing, local and remote.Local mode is provided for compatibility with earlier DF1 products, such asthe Data Highway/Data Highway PlusAsynchronous Interface Module

(1770-KF2) and when only one interface module is used in the system.

You may prefer Local mode for use in applications where the RS-232C linkis not networked, since it simplifies the polling algorithm.

Remote mode should be used when more than 31 SLC nodes are required onthe DH-485 network. Because the interface module is transparent to themaster device, existing drivers can be used without rewriting.

Local Mode

Local mode requires an intelligent master device, capable of specifying botha station address and a destination address. Because the interface module

acts as a slave on a half-duplex network, the half-duplex masters access tothe DH-485 node is indirect. The destination address and the station addressare generally different.

In Local mode, the polling algorithm used by the half-duplex master issimplified so that the master only needs to poll the single interface module.The module will respond to messages from the half-duplex master only if thestation address contained in these messages is the node address of theinterface module. The module then forwards the packet to the appropriateDH-485 node, as defined by the destination address.


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Responses from remote nodes on the DH-485 network contain a destinationaddress equal to that of the interface module, and not that of the half-duplexmaster device. The module responds to poll packets from the half-duplex

master by returning whatever data has been forwarded to it by the remotenodes under its jurisdiction.

In the following illustration, the half-duplex master only polls the interfacemodule at station address 01. Messages from the half-duplex master to theSLC 500s are sent using a master message containing both the stationaddress of the interface module (node 01) and the destination address of theSLC 500 (node 03 for example). Responses from the SLC 500s to thehalf-duplex master contain the destination address of the interface module(node 01), which then returns all responses to the half-duplex master stationupon being polled.

During configuration of the interface module, the modules destination

address, or slave address (page511or68), is selected if Local mode hasbeen selected.


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Remote Mode

The valid range of slave addresses on a half-duplex network is 000 376octal (000 254 decimal) accommodating a total of 255 devices. The valid

range of addresses on a DH-485 network is 00 37 octal (00 31 decimal).

To allow addressing of up to 255 DH-485 nodes, eight groups (groupnumbers 00 - 07) of DH-485 networks are established. Each group numberdefines a DH-485 network, which can consist of up to 32 nodes each (exceptfor group 07 which is limited to 31 nodes). Refer to the table on thefollowing page.

During configuration of the interface module, the modules group number(page511or68)is selected if Remote mode has been selected.

In Remote mode, the module appears transparent to the half-duplex master,so that remote SLC 500s can be polled directly as individual slaves on the

half-duplex network. The interface module responds to the half-duplexmaster if the station address specified corresponds to the node address of any(tokenpassing) stationon the DH-485 network connected to that interfacemodule.

Messages from the remote nodes on the DH-485 network (such as the SLC500s) use the destination address of the module. Normally the moduleresponds to a message from the DF1 master by swapping the source anddestination addresses in the received message, assuring that the replymessage is sent to the proper DF1 master station.

If a DH-485 node initiates a message to the DF1 master, the moduleoverwrites the destination address with the Master Station Value configuredin the Remote mode submenu. The message received by the half-duplexmaster will contain a source address equal to the station address specified inthe poll packet, and a destination address equal to the address of thehalf-duplex master device.

The table that follows provides the conversion using the group number.Remember that half-duplex DF1 (group) addresses are in octal and DH-485node addresses are in decimal.


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Example of Remote Mode Addressing on a Multi-Drop Network

This example shows a PLC-5/250 as the half-duplex master in a multi-dropconfiguration. Each interface module has been configured after Remote

mode has been selected. The half-duplex Master Address of the PLC-5/250has been set to 010 (octal).

Important: Each interface module must be set up for a unique groupnumber.


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The group number is used by the interface module to create a half-duplexDF1 address for each node on the DH-485 network. The DF1 addresses arethe octal equivalent of an eight bit binary word with the three most

significant bits corresponding to the group number and the five leastsignificant bits corresponding to the local network address, as follows:

01111101

1

011 11101

7 5

The following table lists the devices from the above network along with theirDH-485 local network address and their DF1 multi-drop address.


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SlavetoSlave Communication

The interface module allows communication from a DH485 network deviceto a single DF1 slave device, regardless of which mode of halfduplex

addressing is selected (local or remote). To achieve this, the interfacemodules Master Station Address must be configured as that DF1 slaveaddress.

For example, if the APS terminal in the illustration below is DF1 node 3, theinterface modules Master Station Address must be configured as node 3.

APS

The operation of slavetoslave communication differs slightly depending onwhether the interface module is in local or remote mode.


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!

ATTENTION: Do not force outputs to a remote SLC systemthrough the interface module. Phone line disturbances, interfacemodule failure, or other system failure could disrupt remotecommunications and cause the outputs to remain active.

The interface module operates as a token passing master on the DH-485network. It can communicate with other DH-485 master stations (such as anSLC 5/02) and with DH-485 token passing slave devices (such as an SLC5/01).

The module communicates with other master stations using theAllen-Bradley programmable controller command set. For details, refer to

theData Highway/Data Highway Plus/DH-485 Protocol and Command SetManual, Publication Number 1770-6.5.16.

The DH-485 network also supports non-token passing slave devices. Themodule communicates with these slaves using a special PLC command(CMD) byte.

Application programs communicate with non-token passing slaves via SRD(Send and Receive Data) messages on DH-485. The SRD message is a link

layer service provided on DH-485. The Programmable ControllerCommunications Command Set (PCCC) has been extended to provide SRDmessages by setting the PCCC CMD byte to 09. The SRD message cannotbe used in slavetoslave communication.

A detailed description of the packet format is found in theDataHighway/Data Highway Plus/DH485 Protocol and Command Set Manual,Publication Number 1770-6.5.16.

The format of the application layer data within the packet is completelydependent on how the destination device is implemented. Refer to thedestination devices user manual for this information.


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The hardware handshaking option must be enabled for the module toproperly control a modem.

The module continually asserts DTR while it is waiting for a call.

Under this condition, the modem answers a call and asserts DCD uponconnection. When the module detects DCD, communications can start.

After detecting DCD, the module continues to monitor the DCD line. IfDCD goes off, the module restarts the 10second timeout. If DCD is notrestored within 10 seconds, the module initiates the hangup sequence. Thisfeature allows the remote node to redial in case the connection was lost dueto a fault in the phone system.

This handshaking is necessary to guarantee access to the phone line. If thehandshaking protocol is defeated by improper selection of modem options or

wiring of communication cables, the modem may still answer a call. But ifthe connection is lost, the modem will not hang up. It will then beimpossible for the remote node to re-establish the connection because it willget a busy signal.

For successful modem communication ensure that:

APS and the interface module agree on Baud Rate and Error Checking.

Both modems have the echo disabled.

Both modems have Carrier Detect set to normal (unforced).

Both modems have DTR Dialing disabled.

The modem to receive the call has Autoanswer enabled.


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This chapter provides the following installation and system configurationinformation:

European Union directives compliance

module functionality

mode selection

port configuration verification

module installation

cable connection

SLC chassis, DF1 driver, and module configuration

!ATTENTION: Do not install or remove the 1747KE modulefrom the SLC chassis until all power dissipates from the SLC 500power supply (approximately 10 seconds).

If this product has the CE mark, it is approved for installation within theEuropean Union and EEA regions. It has been designed and tested to meetthe following directives.

This product is tested to meet Council Directive 89/336/EECElectromagnetic Compatibility (EMC) and the following standards, in wholeor in part, documented in a technical construction file:

EN 50081-2EMC Generic Emission Standard, Part 2 Industrial Environment

EN 50082-2EMC Generic Immunity Standard, Part 2 Industrial Environment

This product is intended for use in an industrial environment.


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Your series B interface module has the ability to function as a series Ainterface module. This feature may be important to you if you are replacinga series A module with a series B module. (Refer to page 4-3.)

The modules functionality depends on the placement of the JW4 jumper.Horizontal placement of the jumper gives the module functionalityequivalent to a series A interface module, while vertical placement of thejumper accesses the added functionality of a series B interface module.

If you are not replacing a series A module, you will want to access the fullfunctionality of the series B module. Therefore, as you work through theremainder of this manual, follow the instructions for series B functionality(vertical placement of the JW4 jumper).

Skip the next section and move on to Set the Modules Mode.


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Important: Choosing series B functionality requires you to change the

module configuration ID assigned in your processor.

For Series A Functionality

If you donotwant to alter the existing configuration in your user program inany way, choose the series A functionality for your new module. Thehorizontal placement of JW4 gives the series B module a moduleconfiguration ID equivalent to the module configuration ID of the series Amodule you are replacing (4209).

As you work through the remainder of this manual, follow the instructionsfor series A functionality (horizontal placement of the JW4 jumper).

Important: The increased functionality of the series B interface module(i.e., the Real Time Clock, backplane configuration, and SLCprocessor reset of the interface module) is not available with theseries A functionality.

For Series B Functionality

The series B module functions identical to the series A module, but has theseadditional features:

Real Time Clock (RTC)

backplane configuration

SLC processor reset of the interface module.

If you want to use the added features of the series B interface module, followthe directions given for series B functionality (vertical placement of the JW4jumper) as you work through the remainder of this manual.

Important: You will be required to change the module configuration IDassigned in your processor. The vertical placement of the JW4jumper gives your module a configuration ID that differs fromthe configuration ID of your series A interface module.

The procedure for changing the module configuration ID isexplained later in this chapter. (See page 4-13.)


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Setting the modules mode depends on which method you want to use toconfigure the module. You can configure the module using:

an ASCII terminal (chapter 5)

backplane communications (chapter 6)

Important: You can only use backplane communications if you selectedseries B functionality for the module.

Decide which method you want to use and then place the JW4 jumperaccording to the directions given below.

Configuration of the interface module with an ASCII terminal is allowedonly when the JW4 jumper is in Configuration mode. Place the module inthe Configuration mode that corresponds to the functionality you chose forthe interface module, as shown below.

For Series A Functionality

For Series B Functionality

Reading and writing configuration data through the backplane is allowedonly for series B interface modules, and then only when the JW4 jumper is inthe vertical Run mode position. Place the module in vertical Run mode asshown below.


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Jumper JW1 selects the following electrical interface for the CONFIG port:

RS-423/232 (default)

RS-422

RS-485

!ATTENTION: All other jumper settings are illegal and maycause damage to the module.


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Jumper JW2 selects the following electrical interface for the DF1 port:

RS-423/232 (default)

RS-422

RS-485

!ATTENTION: All other jumper settings are illegal and maycause damage to the module.


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Installation procedures for this module are the same as any other discrete I/Oor specialty module.

Important: Make sure you have JW1, JW2, and JW4 configured.

!ATTENTION: Do not install or remove the 1747KE modulefrom the SLC 500 chassis until all power dissipates from the SLC500 power supply (approximately 10 seconds).

1. Align the full sized module circuit board with the chassis card guide. Thefirst slot (slot 0) of the first chassis is reserved for the CPU.

2. Slide the module into the chassis until the top and bottom latches arelatched. To remove the module, press the releases at the top and bottomof the module and slide it out.


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The CONFIG and DF1 ports communicate to user devices throughRS-423/232, RS-422, and RS-485 Communication modes. TheCommunication mode is selected by setting jumpers JW1 and JW2 as

described on pages4-5and4-6.

Important: The following table and cable drawings assume the peripheraldevices have conventional pin assignments. Check thedocumentation for your device to verify signals conform tothose shown.

Use these pin assignments to construct communication cables for theCONFIG and DF1 ports. These connectors must be wired to correspond tothe selected communication mode.

Important: The signal names on a DCE device are viewed from a DTEperspective. For example, TXD is a DTE output and also aDCE input.


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The following illustrations show wiring diagrams for the RS-423/232,RS-422, and RS-485 communications.


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The DH485 port can communicate to user devices through the DH-485Communication mode. Use a 1747-C11, 1747C10, or 1747-C13 interfacecable to connect the module to a link coupler interfaced with the DH-485

network.

If you use the 1747-C11 or 1747C10 cable, it connects between the DH485port on the module and the J1 (CPU) connector on the link coupler. Powerfor the link coupler will come from the interface module. (Refer to pageA1.)

If you use the 1747-C13 cable, it connects between the DH485 port on themodule and the J2 (Peripheral) connector on the link coupler. Power for thelink coupler must be provided from some other source. (Refer to page A1.)

The 1747-C13 cable can also connect the modules DH485 port directly to asingle SLC processor. It connects between the DH485 port on the moduleand the DH485 port on the SLC 500 processor.


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The slot containing the interface module must be assigned within the SLCprogram. Your SLC processor can be programmed with APS (AdvancedProgramming Software) or an HHT (Hand-Held Terminal). Although theconfiguration steps are similar, they are not identical. The following stepsare provided for the modification of an existing user program.

1. Assign your SLC processor (if you havent already):

A. Press

,

, and then

.

B. Press

to select a processor.

2. Assign the module to an open slot:

A. Press

.

B. Highlight an open slot and press

.

C. If you are using APS v3.20or earlier:

(1) Highlight the last entry entitled and press [ENTER].

(2) Enter the module ID code. The ID code for interface modules withseries A functionality is 4209, while the ID code for interfacemodules with series B functionality is 3509. Entering the moduleID code will automatically create the correct input and outputwords.


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D. If you are using APS v4.0 4.2:

For series A functionality, select 1747-KE from the list of modules.

For series B functionality, highlight the last entry entitled and press [ENTER]. Enter module ID code 3509.

1. Assign your SLC processor (if you havent already):

A. Press

[ENTER]

and

B. Select the processor type with the cursor and press[ENTER]and[ESC]

2. Assign the module to an open slot.

A. Press

and then select an open slot with the cursor.

B. Press

and

3. Assign the module by entering the module ID code. The ID code forinterface modules with series A functionality is 4209, while the ID codefor interface modules with series B functionality is 3509. Entering themodule ID code will automatically create the correct number of input andoutput words.

If you are using APS version 3.01 or later as your host station tocommunicate with remote SLC nodes connected through the interfacemodule, read this section. It describes the DF1 setup required within APS.

APS versions 3.01 and later contain a full-duplex DF1 driver. Refer to yourAdvanced Programming Software User Manual, Document Number9399-APSUM, for details on configuring the DF1 port.

When communicating with the interface module, it is important that the

parameters within APS are set up properly. Begin by selecting

from the top level APS menu, and then follow the steps below:

1. For

choose 1770-KF3 (Full-Duplex) for APS 3.xx, or choose

KF3/KE (FullDuplex) for APS 4.xx. This will select the DF1 driverwithin APS.


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2. For

choose the same address as the DH485 port address

configured in the interface module. (Refer to page57or 69.)

3. Choose

to bring up a submenu.

A. Set

,

, and

to the same DF1 values as

configured within the interface module. (Refer to page56or 66.)

B. For

(Flow Control) either choose [NO]for direct connection

to the 1747-KE module or choose [YES]when connected to a modem.

C. Choose

. Under this menu we recommend using the default

settings for the following:

D. Save the setup by pressing

.

Refer to theAdvanced Programming Software User Manual, DocumentNumber 9399-APSUM, for all other settings.

Configuration instructions are inchapter 5, Module Configuration Using anASCII Terminal and chapter 6, Module Configuration Using the Backplane.

Proceed to the chapter that corresponds to the configuration method you havechosen.

!

ATTENTION: This module is a device used forcommunications. Improper configuration or module failure maycause communications to stop. Be careful to avoid systemdesigns that would cause probable safety concerns within thesystem in the event of a communication failure.


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Once your interface module has been configured, complete the modulesinstallation as follows:

!ATTENTION: Do not install or remove the 1747KE modulefrom the SLC 500 chassis until all power dissipates from the SLC500 power supply (approximately 10 seconds).

1. If you configured your module using an ASCII terminal, place the moduleinto Run mode. Follow the steps below:

A. Remove the module from the chassis. The removal is reverse of theinstallation directions found on page4-7.

B. Place your module in Run mode using JW4, as shown below.

C. Reinsert the module into the chassis.

Important: Make sure you have JW4 positioned for the Run mode thatcorresponds to the functionality youve chosen for your module.


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2. Connect the DF1 cable to the DF1 port.

3. Connect the DH-485 cable to the DH485 port.

4. Insert the cable tie in the slots and secure the cable.

5. Cover all unused slots with the Card Slot Filler, Catalog Number1746-N2.

6. Turn on power to the SLC 500 chassis.

7. Verify that the LEDs on the module indicate normal operation per theLED table on page13.


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This chapter guides you through the configuration of your interface moduleusing an ASCII terminal. If you prefer to configure your module usingbackplane communication, skip this chapter and move on to chapter 6. Onceyou complete the configuration, return to page4-16for instructions oncompleting the installation of your module.

Topics for this chapter include:

configuration of the ASCII terminal

overview of module configuration with a terminal

top level setup menu

CONFIG port menu

DF1 port menu

DH485 port menu

DF1 protocol menu

display parameters menu

Important: Configuration with an ASCII terminal is an alternateconfiguration method than that presented in chapter 6, ModuleConfiguration Using the Backplane.


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To communicate with the interface module through an ASCII terminal,connect the terminal to the CONFIG port as shown below:

The ASCII terminal can be any industrial terminal, workstation, or personalcomputer with terminal mode software that communicates in alphanumericmode.

If a dedicated ASCII terminal such as a DEC VT100 or DEC VT220 is notavailable, software packages are available to allow a personal computer toemulate an ASCII terminal.

Allen-Bradley has a development software package (Catalog Number1747-PBASE) for the SLC 500 BASIC module that is capable of ASCIIterminal emulation on an IBM-compatible computer.

A software package marketed by DataStorm Technologies calledPROCOMMis also available for ASCII terminal emulation. This packageis popular with most modem users.

The Microsoft Windowspackage also includes a terminal emulationprogram. In addition many third-party programs (available through most ofthe companies that sell modems) can be used to allow use of your personalcomputer as an ASCII terminal.

Configure the ASCII terminals communication parameters as follows:

1200 baud

8 bits per character

no parity

1 stop bit

software handshaking enabled (XON/XOFF)


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Configuration of the module with an ASCII terminal requires:

an ASCII terminal connected to the CONFIG port

jumper JW4 to be in the configuration position (See page 4-4.) knowledge of the communication parameters of the devices you will be

connecting to each of the module ports

knowledge of what types of cables will be used to connect devices to themodule ports (Refer to the cable information beginning on page 4-8.)

When you power up the module and your ASCII terminal, a Top Level Setupmenu will appear. The menu structure is three levels deep, as shown in thefollowing figure.


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The Top Level Setup Menu provides six selections, as shown below.

To redisplay the above menu, press [ENTER].

To access the corresponding menus (described on the following pages),press [1]through [5].

To save changes and exit, press [X]. This enables the DH485 and DF1ports.

Important: After configuration is complete, place the module in Run modeas described on page4-16. If you operate the module in

Configuration mode, cycling power will disable the DF1 andDH485 ports, return to the configuration mode, and display theTop Level Setup Menu on your ASCII terminal.

You can change any of the parameters in menus 1 through 4 as follows:

1. Select the parameter you wish to change. The current parameter settingand a prompt for entering a new value appear at the bottom of the screen.

2. Type in the new value and press [ENTER].

3. If you enter an invalid value, the ASCII terminal beeps and the promptremains. Refer to the tables on pages55through511for the validparameter options.

4. When you enter a valid value the prompt line disappears, indicating thatyour change has been saved. You now have the option to select anotherparameter.

5. Once you finish changing parameters, press [X]to return to the Top LevelSetup Menu.


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The CONFIG PORT Setup Menu provides six selections, as shown below.

Whenever the module is powered up, the CONFIG port is set to the defaultparameters shown in the table below. If these parameters are changed andthe setup is saved, they will remain changed only as long as module powerremains on. Whenever power to the module is cycled off, the CONFIG portparameters return to their default values.

The CONFIG port setup parameter options are:


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The DF1 PORT Setup Menu provides five selections, as shown below.

When the module is powered up for the first time, the DF1 port will be set tothe default parameters shown in the table below. If these parameters arechanged and the setup is saved, then the module will always power up withthe new settings, unless the battery fails and power to the modules RAM islost.

The DF1 port setup parameter options are:


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The DH-485 PORT Setup Menu provides six selections, as shown below.

When the module is powered up for the first time, the DH-485 port will beset to the default parameters shown in the table below. If these parametersare changed and the setup is saved, then the module will always power upwith the new settings, unless the battery fails and power to the modulesRAM is lost.

The DH-485 port setup parameter options are:


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When you press [4]to select the DF1 Protocol Menu, you are first promptedat the bottom of the Top Level Setup Menu to select [H]or [F]for half- orfull-duplex, as shown below.

Important: Choose [F]for full-duplex when using APS.

Select full-duplex by pressing [F]when prompted at the bottom of the TopLevel Setup Menu. The DF1 Full-Duplex Setup Menu provides 12

selections, as shown below.


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When the module is powered up for the first time, the DF1 protocol will be

set to the default parameters shown in the table below. If these parametersare changed and the setup is saved, then the module will always power upwith the new settings, unless the battery fails and power to the modulesRAM is lost.

The DF1 full-duplex setup parameter options are shown in the table below:


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When you press [4]on the Top Level Setup Menu, you are prompted at the

bottom of the menu to select [H]or [F]for half- or full-duplex. Enter [H]todisplay the Half-Duplex Setup Menu, as shown below.

Important: Choose [F]for full-duplex when using APS.

When the module is powered up for the first time, the DF1 protocol will beset to the default parameters. If these parameters are changed and the setupis saved, then the module will always power up with the new settings, unlessthe battery fails and power to the modules RAM is lost.

The DF1 half-duplex setup parameter options are shown in the table on thefollowing page:


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When you press [5]from the Top Level Setup Menu, you see a screendisplaying all of the parameter settings of the CONFIG, DF1, and DH485ports. There are two Setup Summary screens, one for full-duplex and one forhalf-duplex. If you are in full-duplex mode when you select [5]you will seethe full-duplex summary screen. Similarly, if you are in half-duplex modewhen you select [5]you will see the halfduplex summary screen.


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To exit the Display Parameters screen and return to the Top Level SetupMenu, press any key.

Setup Summary screens for the interface modules default settings follow:


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Important: Configuration through the backplane is an alternateconfiguration method than that presented in chapter 5, ModuleConfiguration Using an ASCII Terminal. If you prefer toconfigure your module using an ASCII terminal, or havealready done so, you do not need to go through this chapter.Instead, return to chapter 5 for directions on configuration witha terminal or move on to chapter 7.

The interface module can be configured through backplane communicationsusing any SLC fixed, 5/01, 5/02, 5/03, or 5/04 processor. This chapterguides you through the configuration of your interface module using

backplane communications. Once you complete the configuration, return topage4-16for instructions on completing the installation of your module.

Topics for this chapter include:

configuring the interface module from the SLC

placing the module into software Run mode from the SLC

reading the modules configuration from the SLC

examining the SLC processors status word

building the DF1, DH485, and Modem Init String configuration packets

using the Real Time Clock

establishing a Data Echo between the interface module and the SLC

resetting the interface module from the SLC

In this method of configuration, the SLC processor uses the backplane toload the configuration data into the Output Image file for the interfacemodule. By assigning a Data ID value in the Output Image file youdesignate which parameters to configure.

There are six valid Data ID values, one for each of the configurationpackets you create to configure your interface module. The valid Data IDvalues and their corresponding configuration packets are listed in the tablebelow.


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Important: Any of the configuration packets can be sent independently anddo not need to be in a particular sequence, with the exception ofthe Modem Init String packets (Data ID 4 and 5). In this

instance, packet ID 4 must be sent before packet ID 5.

The steps for configuring the module from the SLC follow. Use theseinstructions to build the configuration packets described in the remainder ofthis chapter.

Important: The terms software Configuration mode and software Run modein this chapter refer to the SLC processor changing the interfacemodules mode across the backplane. The modules JW4jumper must remain in the vertical Run mode (moduleconfiguration ID=3509) while using backplane

communications.

Important: The configuration data that is loaded does not take effect untilthe interface module goes to software Run mode. Therefore, tosave your configuration changes be sure to put the module insoftware Run mode.


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When configuration is complete, place the module in software Run mode byfollowing these steps:

The interface modules current configuration can be read back to the SLCprocessor using the Input and Output Image files.

Important: The interface module can be in software Run or softwareConfiguration mode during the read operation.

To read the modules configuration:


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The output status word reserved for implementing backplane configuration

and for resetting the interface module is shown below. Those status bits notdefined here are reserved for future use.

Status Word, Word 0

Bit Number (decimal) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

O:e.0

This is the input status word reserved for implementing backplaneconfiguration and for resetting the interface module. Those status bits notdefined below are reserved for future use.

Status Word, Word 0


I:e.0


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Status Codes from the Module to the Processor

The module informs the SLC processor on the status of the configure or readtransaction by placing a status value in the Input Image file word 0, bits

410. A value of 00 indicates that the status is okay.


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Use the SLC processor to set up the DF1 port. Build the configurationpacket shown below by following the configuration instructions found onpage62. Descriptions of each of the parameters follow.

When the module is powered up for the first time, the DF1 port will be set tothe default parameters shown in the table below. If these parameters arechanged and the setup is saved (by changing to software Run mode), then themodule will always power up with the new settings, unless the battery failsand power to the modules RAM is lost.

The DF1 port setup parameter options are:


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Upon initial power up, the module defaults to full-duplex and the parameters

shown in the table below. If these parameters are changed and the setup issaved (by changing to software Run mode), then the module will alwayspower up with the new settings, unless the battery fails and power to themodules RAM is lost.

The DF1 full-duplex setup parameter options are shown in the table below:


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If you set Word 1, bit 11 to halfduplex (0), the default parameters are those

shown in the table on the following page. If these parameters are changedand the setup is saved (by changing to software Run mode), then the modulewill always power up with the new settings, unless the battery fails andpower to the modules RAM is lost.


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Use the SLC processor to set up the DH485 port. Build the configurationpacket shown below by following the configuration instructions found onpage62. Descriptions of each of the parameters follow.

When the module is powered up for the first time, the DH-485 port will beset to the default parameters shown in the table below. If these parametersare changed and the setup is saved (by changing to software Run mode), thenthe module will always power up with the new settings, unless the battery

fails and power to the modules RAM is lost.

The DH-485 port setup parameter options are:


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When the module is powered up for the first time, the Modem Init String isempty. You can build the string using the two Data ID numbers reserved forthe Modem Init String.

The packet with Data ID 4 will set up the first 14 characters of the ModemInit String. If you require less than 14 characters, place a NULL in thelocation immediately following the last valid character. The module ignoresall characters beyond the NULL value. If you require exactly 14 characters,the module automatically places a NULL after the 14th character.

If you need more than 14 characters, you also need to send the packet withData ID 5. Send this packet only afteryou send the packet with Data ID 4.Here again you need to place a NULL immediately following the last validcharacter. If you use all available characters of the string, a NULL isautomatically placed after the 28th character.

To set up string characters 114, build the configuration in the table shownbelow. Please note that sending a ~ character produces a one second wait onthe modem. Follow the configuration instructions found on page62.


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Build the configuration in the table shown below if you need to usecharacters 1528 of the Modem Init String. Please note that sending a ~character produces a one second wait on the modem.

You can use the interface module as a Real Time Clock in conjunction withnormal module operation. Set up the Calendar/Clock Function by using theconfiguration instructions found on page62and the configuration packetinformation shown below.


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Whether in software Run or software Configuration mode, the SLCprocessor can send data in the Output Image file to the interface module andhave it echoed back by the modules Input Image file. This feature gives the

SLC processor the ability to verify that the module is operating properly. Ifthe data is not echoed back, the module is assumed to be operatingincorrectly and is forced into a reset by the SLC processor. (See the sectionResetting the Interface Module from the SLC.)

The data echo occurs as follows:

The SLC processor can set up the Data Echo configuration by building theconfiguration packet shown below.


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The SLC processor can perform a soft reset of the interface module when themodule is in either software Run or software Configuration mode. If theReset bit is set, all other configuration information within that Output Image

file will be ignored by the interface module. The reset is accomplished asfollows:


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This chapter contains the following information:

interface module status indicators

input image description

SLC fault code

For a full description of the eight LEDs on the front of the module, see page13. During normal operation, the LEDs are illuminated as follows:

DH-485/RS-232C

ACT

485

CFG

DF1

FAULT

BA LOW

H/D

F/D

INTERFACE

Shown below are possible error conditions represented by the LEDs and theirpossible solutions.


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Shown below is the input image that provides status to the SLC processor.Bit 13 indicates the battery status. The status information contained in bit 13corresponds to the modules BA LOW LED. Bit 15 indicates whether the

module requires configuration or not.

Status Word, Word 0


I:e.0

The module informs the SLC processor on the status of the configure or readtransaction by placing a status value in the Input Image file word 0, bits410. A value of 00 indicates that the status is okay.


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If a fault has occurred in the SLC system and the SLC fault code indicatesthe slot the interface module is installed in, the fault might be associated withthe module I/O configuration. Refer to the table below:


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This chapter contains the following application examples:

basic configuration example using the backplane

supplementary examples using the backplane

APS to SLC network via modem example

This example demonstrates configuration of the interface module using thebackplane.

Important: Before you begin this application, insure that the JW4 jumper isin vertical Run mode (module configuration ID=3509).

In this application, the configuration parameters are in the data file N10.


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For this example, configure the parameters to the settings provided below.

DF1 Configuration (N10:1117)

DH485 Configuration (N10:2127)

Modem Init String Characters 114 (N10:3137)

c d e f g h i j k l m n o p

Modem Init String Characters 1528 (N10:4147)

A B C (null)


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Configuration occurs upon power up or when entering Run mode. The

configuration is successful only if data file N10:0=4. If your configuration isunsuccessful, check the table below for the failed configuration block.

If you need to reconfigure the module, set N10:0 equal to 0 and change theincorrect parameters in N10:1047.

The following steps summarize the user program:

1. N10:0 is initialized.

2. The DF1 port config block is copied to the interface module.

3. The results of the DF1 config are checked.

4. The DH485 port config block is copied to the interface module.

5. The results of the DH485 config are checked.

6. The Modem Init String (114) config block is copied to the Module.

7. The results of the Modem Init String (114) config are checked.

8. The Modem Init String (1528) config block is copied to the Module.

9. The results of the Modem Init String (1528) config are checked.

10.The interface module is placed in Run mode.

At the end of this configuration sequence, data file N11:1047 reflects theconfiguration parameters as read from the interface module.

The user program for the backplane configuration example follows:


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MOV

MOVESource 0

Dest N10:00

15] [

S:1

Put interface modulein Config Mode.

Rung2:0

N10:0 is initialized here. N10:0 points to the Config block that is being transferred.

Clear pointer.

( )O:1

15

L

( )O:1

14

U

Reset Handshake bit.

EQUEQUALSource A N10:0

0Source B 0

COPCOPY FILESource #N10:10Dest #O:1.0Length 8

Rung2:1

Copy DF1 Configto the module.

This rung copies a new DF1 Config block to the interface module.

( )O:1

14

L

14]/[

O:1

14]/[

I:1

Config handshakebit to the module.

Config handshakeACK bit from the module.


Copy Config fromthe module.





0Source B 0

COPCOPY FILESource #I:1.0Dest #N11:10Length 8

Rung2:2

This rung checks the results of the DF1 Config from the interface module.

( )

O:1

14U

14] [

O:1

14] [

I:1

ADDADDSource A N10:0

0Source B 1

Dest N10:00

MEQMASKED EQUALSource N11:10

0Mask 07F0

Compare 0

Check status andpoint to nextConfig block.


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Copy DH485 Configto the module.





0Source B 1

COPCOPY FILESource #N10:20Dest #O:1.0Length 8

Rung2:3

This rung copies a new DH485 Config block to the interface module.

( )O:1

14

L

14]/[O:1

14]/[I:1


0Source B 1


Rung2:4

This rung checks the Modem Init String (114) from the interface module.

( )O:1

14

U

14] [

O:1

14] [

I:1


0Source B 1

Dest N10:00


0Mask 07F0

Compare 0







0

Source B 2

COPCOPY FILESource #N10:30Dest #O:1.0

Length 8

Rung2:5

This rung copies a new Modem Init String (114) Config block to the module.

( )O:1

14

L

14]/[

O:1

14]/[

I:1

Copy Modem InitString (114) Configto the module.





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0Source B 2


Rung2:6


( )O:1

14

U

14] [O:1

14] [I:1


0Source B 1

Dest N10:00


0Mask 07F0

Compare 0







0

Source B 3

COPCOPY FILESource #N10:40Dest #O:1.0

Length 8

Rung2:7

This rung copies a new Modem Init String (1528) Config block to the module.

( )O:1

14

L

14]/[

O:1

14]/[

I:1

Copy Modem InitString (1528) Configto the module.





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0Source B 3


Rung2:8


( )O:1

14

U

14] [

O:1

14] [

I:1


0Source B 1

Dest N10:00


0Mask 07F0

Compare 0

Copy Config tothe module.






0Source B 4

Rung2:9

Set the interface module to Run mode.

14]/[

O:1

14]/[

I:1( )

O:1

15

U

Set the Run mode bit.

Rung2:10

Shown below is the configuration information for N10 in Decimal radix.


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These supplementary examples demonstrate how to use the backplane tooperate the interface modules Real Time Clock and Data Echo features.

Important: Before you begin these applications, insure that the JW4 jumperis in vertical Run mode (module configuration ID=3509).

You can use the interface module as a Real Time Clock (RTC) in conjunctionwith normal module operation. This example shows you how to set up theCalendar/Clock Function using the backplane.

Parameter Settings

The values used by the RTC are in N10:17, and are initialized as shown inthe table below.

User Program

The example program shown on the following page initializes the interfacemodules calendar and RTC when bit B3:0/0 is toggled from low to high. BitB3:0/1 is toggled every 2.56 seconds, and the new RTC values that are readare then placed in data file N10:1117.


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Copy the RTC data.

Turn ON thehandshake bit.

COP

COPY FILESource #N10:0Dest #O:1.0Length 8

0] [

B3

Put Interface Modulein Config mode.

Rung2.0

This rung initializes the module.

(U)O:1

13

( )O:1

14

L

2

B3[OSR]


Unlatch handshaketo module.

Rung2:1

This rung gets the calendar/clock data from the module.

( )O:1

14

U

Get data from module.

14] [

O:1

14] [

I:1

Handshakebit tomodule.

Handshakebit frommodule.

MEQMASKED EQUALSource I:1.0

32762Mask 07F0

Compare 0

Turn ON thehandshake bit.

Move the RTC data tothe module.

MOVMOVESource 8193

1Dest #O:1.0

16378

7] [

S:4Rung2.2

This rung sets the 2.56 second freerun counter.

1

B3

( )O:1

14

L

[OSR]

Rung2.3


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Configuration Data Table


The Data Echo feature gives the SLC processor the ability to verify that theinterface module is operating properly. This example shows you how to setup the Data Echo using the backplane.

User Program

This program shown on the following pages checks for proper interfacemodule operation every 40 seconds, and resets the module if properoperation is not detected.


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TON

TIMER ON DELAYTimer T4:0Time Base 0.01Preset 4000

Accum 0

Rung2:0

This rung provides a 40 second base timer.

Data echo timer.

(EN)(DN)

TONTIMER ON DELAYTimer T4:1Time Base 0.01Preset 500

Accum 0

DN] [

T4:0Rung2:1

This rung provides a 5 second timer.

Start the response timeout.Response timer.

(EN)

(DN)

COPCOPY

Source #N10:0Dest #O:1.0Length 8

11] [

T:4

Turn OFF interfaceReset bit.

Rung2:2

This rung initializes the interface module.

Start the response timeout.

Copy test echo data tointerface module.

( )O:1.0

12

U

0[OSR]B3 MOV

MOVESource S:4

0Dest N10:1

123

Get quasi random data.

Turn ON handshake bitto interface module.

( )O:1.0

14

L


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I:1.0

Turn OFF handshakebit to interfacemodule.

Rung2:3

COPCOPYSource #I:1.0Dest #N10:10Length 8

14] [

O:1.0

Reset 40 second basetimer.

This rung checks that proper data was echoed from the module,

or that 5 seconds passed without interface module response.

Get data from the

interface module.

T4:0

Check the firstword echoed.

( )O:1.0

14

U

14] [

I:1.0

14] [

O:1.0

14]/[

7] [

S:4

NEQNOT EQUALSource A N10:11

0Source B N10:1

123

Handshakebit tomodule.

Handshakebit frommodule.

Handshakebit to theinterface

module.

No responsefrominterface

module.

Set 5 secsafter dataecho.

Check the lastword echoed.

NEQNOT EQUALSource A N10:17

0Source B N10:7654

(RES)

Turn ON interfaceReset bit.

( )O:1.0

12

L

Rung2:4

Configuration Data Table



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One of the primary purposes for the interface module is to connect theSLC 500 Advanced Programming Software (APS) to a SLC 500 network byusing modems. This example shows you how to make this type of

connection by taking you through the steps necessary to set up the followingsystem:

APS

v 3.01

To connect APS to a SLC 500 network, the serial communications port on

the interface module that uses the DF1 protocol must be configured to matchthe interface parameters for the computer serial port where APS is installed.The text which follows describes the procedure you use to do this, and alsoshows you how to configure your modem.

The steps below describe how to configure the interface modules serial portusing an ASCII terminal. However, you may use an alternate configurationmethod if you choose (i.e., ASCII terminal emulation software or backplanecommunication).

1. Place the interface modules JW4 jumper into either horizontal or verticalconfiguration mode, depending on which functionality you chose. (Seechapter 4.)

2. Connect an RS232 cable between an ASCII terminal and the interfacemodules configuration port. Please refer to chapter 4 for RS232 cablepinouts between the interface modules configuration port and the ASCIIterminal serial port. (Use one of the cable diagrams on page 48 for nohardware handshaking.)

3. Configure the module. The DF1 port and the DH485 settings for theinterface module are as shown on the following page:


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4. Once the interface module is configured, place the modules JW4 jumperinto either horizontal or vertical Run mode, depending on whichfunctionality you chose.

Configure the serial port on the computer using the online configuration

screens in APS as follows:

1. At the main menu press

, then

repeatedly until the

1770KF3/KE online configuration menu appears. Be sure all functionsare configured as shown below:

F9

Press a function key

F1 Port COM2F2 Current Device KF3/KE (FullDuplex)

F4 KF3/KE Address 0F5 PROC Address 1

F6 MAX Node Address 31F7 KF3/KE/Modem/FullDuplex Configuration

F9 Save to File

F5 F6

F1

F2

F4

ESC exits/Alt-U aborts changes

ONLINE CONFIGURATION

F7


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2. Configure the computer port to the same interface parameters as the

1747KE by pressing

. The Device/Modem/FullDuplex

configuration menu appears. Configure all functions as shown here:

F9


F1 Baud Rate (PC to KF3/KE) 1200F2 Parity NONEF3 Error Check CRCF4 Use Modem (Flow Control) YES

F5 Dial Phone Number YESF6 Modem Init String ATDTF7 Phone Number XXXXXXXF8 Auto Disconnect 0 (minutes)

F9 Save to FileF10 Full Duplex Configuration

F1

F2

F4


KF3/KE/Modem/Full Duplex Configuration

F7

F3

F10

F5

F6

F8

3. From the KF3/KE/Modem/FullDuplex Configuration menu press

. Set the functions as follows:

F9


F1 ACK Timeout 18F2 NAK retries 2F3 ENQ Retries 2

F5 Command Reply Timeout [x55 ms] 198

F9 Save to File

Full Duplex Configuration

F3

F5


F1

F2


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Configure the modem using its dip switches. The settings for the Hayes

Smartmodem 1200and the Avatex 1200E modems are below. If you areusing a different modem, consult your modems user manual for the properdip switch settings.

Hayes Smartmodem 1200

Avatex 1200E


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1. Connect an RS232 cable between one of the modems and the interface

modules DF1 serial port. (See page 47.) Also, connect a similar cablebetween the other modem and the selected computer serial port.

2. Apply power to all devices.

3. Press

from the main menu of APS. This initiates the local

modem to dial the remote modem. When modem communications isestablished, APS will be online with the SLC500 processor configuredas node 1 on the DH485 network.

4. To access any SLC500 processor connected to the same DH485network that the interface module is connected, press

followed

by

. Once connected to a processor, any functions performed to

a processor with APS connected locally may also be accomplishedremotely.


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This appendix contains information regarding hardware specifications for theDH-485/RS-232C Interface Module.

The module hardware specifications are listed in the following tables.

Important: The 1747-KE module requires both 5V dc and 24V dc powerfrom the SLC backplane. The power consumption of themodule must be taken into consideration when planning yourSLC 500 system. Refer to the documentation supplied withyour SLC 500 fixed or modular controller for additionalinformation on power supplies and current requirements.


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Important: The DH485 Port is not isolated.

Important: When communicating in RS-232 mode, use the RS-423 jumpersettings.

When communicating in RS-423 mode, use RS-423 orcompatible receivers.


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This appendix details how to use the PLC-5 Message instruction to access anSLC 500 processor. This method uses PLC-2 Unprotected Reads andUnprotected Writes to access the Common Interface File, CIF, File 9 of anSLC processor.

PLC-2 Unprotected Reads and Writes are not really implemented asunprotected in the SLC. They are subject to the SLCs file protectionschemes. For instance, they will be rejected if a download is in process orthe CIF file is already open by another device. These types of read and write

commands are somewhat universal in that they are implemented in manyother Allen-Bradley Programmable Controllers.

Important: Although the format of the Unprotected Reads and Writes is thesame as used in other PLCs, the implementation of the addressparameter is different. In Allen-Bradleys PLC products, theaddress is interpreted as a byteaddress. In some SLC 500products, the address is interpreted as a wordaddress.

The SLC 500 and 5/01 use wordaddressing exclusively.

The SLC 5/02, prior to Series C FRN 3, also use wordaddressingexclusively.

The SLC 5/02 Series B, FRN 3 and above have a selection bit, S:2/8,which allows selection of either wordor byteaddressing.

The DTAMfor the SLC uses wordaddressing exclusively.

The CIF is actually like any of the other SLC data files except that it isdesignated as the target file for all PLC-2 Unprotected Read and UnprotectedWrite commands that are received by the SLC. It is always File 9. The CIFcan be defined as Bit, Integer, Timer, Counter, or Control Data types.However, only Bit or Integer files should be used to make addressing easier.

Important: File 9 must be created and defined at the time that the SLC isprogrammed. File 9 must also be made large enough to includethe Unprotected Read and Write addressing space. Otherwise,

all Unprotected Reads and Unprotected Writes will be rejectedby the SLC.

When using the PLC-5 Message instruction, the Destination Address isentered in octal. The PLC-5 automatically translates the octal address to abyteaddress by doubling the decimal equivalent. Therefore, 010 (base 8)becomes 16 (base 10) and 177 (base 8) becomes 254 (base 10). The PLC-5Message instruction does not allow an octal address less than 010 (base 8) tobe entered.


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B2

In application, the CIF can be thought of as a data buffer between all theother SLC data files and the DH-485 port. The SLC must be programmed,using ladder logic, to transfer data between the CIF and the other data files as

shown here.

SLC 500

The CIF can be managed by designating areas to be written to and areas to beread from. If it is desired to know when data has changed in the CIF, useladder logic to program handshaking bits in your CIF data.

The PLC5 Message instructions octal Destination Address must bebetween 010 (base 8) and 177 (base 8). This range corresponds to word16

(base 10) through word254 (base 10) in the SLC. Only even numberedwords (16, 18, 20, ... 254) in the SLC can be addressed by the PLC-5Message instruction. The maximum value for the PLC-5 Messageinstruction Size in Elements parameter is 112 when the destination is anSLC (assuming 1 word elements).

As an example, write 10 words from N7 in a PLC-5 to an SLC 5/02 using thePLC-5s Message instruction.

1. Set up the source address in the Message instruction as N7:0.

2. Set the Size in Elements to 10.

3. Set up the Command Type as PLC-2 Unprotected Write.

4. Set up the Destination Address as 010 (base 8). This corresponds to theSLC address, N9:16.

Since 10 words will be written, make sure that the N9 file in the SLC iscreated to at least N9:25.

It is assumed that the Message instruction will be set up for a remotedestination, since there must be a bridge between the PLC-5 and the SLC5/02, such as a 1784-KA5 linking a DH+and the DH485 network. The1747-KE module can be used as a bridge between the DF1 and DH-485network.


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Important: The byteaddressing mode is selected in the SLC by setting bit S:2/8 to 1. (The default is S:2/8 = 0 for wordaddressing.) This selection bit is only available in the SLC 5/02 Series B,

FRN 3 or later.

The PLC-5 Message instructions octal Destination Address must bebetween 010 (base 8) and 377 (base 8). This range corresponds to byte16(base 10) through byte510 (base 10). This allows odd and even words inthe SLC to be addressed by the PLC-5 Message instruction.

The maximum value for the PLC-5 Message instruction Size in Elementsparameter is 41 when the destination is an SLC (assuming 1 word elements).

As an example, write 10 words from N7 in a PLC-5 to an SLC 5/02 using thePLC-5s Message instruction.

1. Set up the source address in the Message instruction as N7:0.

2. Set the Size in Elements to 10.

3. Set up the Command Type as PLC-2 Unprotected Write.

4. Set up the Destination Address as 010 (base 8). This corresponds to the

SLC address, N9:8.

Since 10 words will be written, make sure that the N9 file in the SLC iscreated to at least N9:17.

It is assumed that the Message instruction will be set up for a remotedestination, since there must be a bridge between the PLC-5 and the SLC5/02, such as a 1784-KA5 linking a DH+ and the DH-485 network. The1747-KE module can be used as a bridge between the DF1 and DH-485network.


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This appendix provides instructions for the replacement, handling, anddisposal of lithium batteries.

Your module provides back-up power for RAM through a replaceablelithium battery (catalog number 1747-BA). This battery provides back-upfor approximately five years. The BA LOW indicator on the front of themodule alerts you when the battery voltage has fallen below a replacebattery threshold level.

To replace the lithium battery follow these steps:1. Remove power from the SLC 500 power supply module.

!ATTENTION: Do not remove the module from the SLC 500chassis until all power dissipates from the SLC 500 power supply(approximately 10 seconds).

2. Remove the module from the chassis by pressing the retainer clips at boththe top and bottom of the module and sliding it out.

!ATTENTION: Do not expose the module to surfaces or other

areas that may typically hold an electrostatic charge.Electrostatic charges can alter or destroy memory.

3. Unplug the battery connector. Refer to the following illustration forbattery connector location.

Important: The module has a capacitor that provides 30 minutes of batteryback-up while the battery is disconnected. Data in RAM is notlost if the battery is replaced within 30 minutes.

Mother

Board

DaughterBoard


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4. Remove the battery from the battery clips.

5. Insert a new battery into the battery clips.

6. Plug the battery connector into the socket with the red lead wire on topand the white lead wire on the bottom.

7. Re-insert the module into the SLC 500 chassis.

8. Restore power to the SLC 500 power supply module.

The procedures listed below must be followed to ensure proper batteryoperation and reduce personnel hazards:

Use battery only for intended operation.

Do not ship or dispose of cells except according to recommendedprocedures.

Do not ship on passenger aircraft.

!ATTENTION: Do not charge the batteries. An explosion couldresult or the cells could overheat causing burns.

Do not open, puncture, crush, or otherwise mutilate the batteries.A possibility of an explosion exists. Toxic, corrosive, andflammable liquids will be exposed.

Do not incinerate or expose the batteries to high temperatures.

Do not attempt to solder batteries. An explosion could result.

Do not short positive and negative terminals together. Excessiveheat can build up and cause severe burns.

Store lithium batteries in a cool, dry environment, typically +20C to +25C

(+68F to +77F) with 40% to 60% humidity. Store the batteries and a copyof the battery instruction sheet in the original container, away fromflammable materials.


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One or Two Batteries Each battery contains 0.23 grams of lithium.

Therefore, up to two batteries can be shipped together within the UnitedStates without restriction. Regulations governing shipment to or within othercountries may differ.

Three or More Batteries Procedures for the transportation of three ormore batteries shipped together within the United States are specified by theDepartment of Transportation (DOT) in the Code of Federal Regulations,CRF49, Transportation. An exemption to these regulations, DOT - E7052,covers the transport of certain hazardous materials classified as flammablesolids. This exemption authorizes transport of lithium batteries by motorvehicle, rail freight, cargo vessel, and cargo-only aircraft, providing certainconditions are met. Transport by passenger aircraft is not permitted.

A special provision of the DOT - E7052 (11th Rev., October 21, 1982, par.8-a) provides that:

Persons that receive cell and batteries covered by this exemption mayreship them pursuant to the provisions of 49 CFR 173.22a in any of thesepackages authorized in this exemption including those in which they werereceived.

The Code of Federal Regulations, 49 CRF 173.22a, relates to the use ofpackaging authorized under exemptions. In part, it requires that you mustmaintain a copy of the exemption at each facility where the packaging isbeing used in connection with shipment under the exemption.

Shipment of depleted batteries for disposal may be subject to specificregulation of the countries involved or to regulations endorsed by thosecountries, such as the IATA Restricted Articles Regulations of theInternational Air Transport Association, Geneva, Switzerland.

Regulations for transportation of lithium batteries are periodicallyrevised.


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The following procedures must be followed when disposing of lithiumbatteries.

!ATTENTION: Do not incinerate or dispose of lithium batteriesin general trash collection. Explosion or violent rupture ispossible. Batteries should be collected for disposal in a manner toprevent against short circuiting, compacting, or destruction ofcase integrity and hermetic seal.

For disposal, batteries must be packaged and shipped in accordance with thetransportation regulations, to a proper disposal site. the U.S. Department ofTransportation authorizes shipment of Lithium batteries for disposal bymotor vehicle only in regulation 173.1015 of CRF49 (effective January 5,1983). For additional information contact:

U.S. Department of Transportation

Research and Special Programs Administration

400 Seventh Street, S.W.

Washington, D.C. 20590

Although the Environmental Protection Agency at this time has noregulations specific to lithium batteries, the material contained may beconsidered toxic, reactive, or corrosive. The person disposing of the materialis responsible for any hazards created in doing so. State and local regulationsmay exist regarding the disposal of these materials.


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D

This appendix contains worksheets to help you configure the interfacemodule. You will find worksheets on the following:

DF1 Full-Duplex

DF1 Half-Duplex


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Name:_______________________________________ Date:____________

Notes:


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Name:_______________________________________ Date:____________

Notes:


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IndexI2


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Index I3


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IndexI4


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Documents

AB interface manual.pdf