RESI-MBUS-MODBUS Manual - Home - Shop Online - Marcom … · RESI® RESI Informatik & Automation GmbH Date: 7.1.2013 Customer: Pages Version: 3.1 Title: RESI-MBUS-MODBUS Manual Edited

RESI®

RESI Informatik & Automation

GmbH

Date: 7.1.2013 Customer: Pages

Version: 3.1 Title: RESI-MBUS-MODBUS Manual

21 Edited by: DI HC Sigl Reviewed by: DI HC Sigl

Project: Reviewed by: -

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RESI-MBUS-MODBUS

Manual

Great care has been taken in the creation of the text, illustrations and program examples in this manual. The editors and publishers accept

no responsibility for any inadvertent omission of entries or for typographical or other errors herein. Nor can they be held responsible

or liable for consequences arising from any errors herein. This manual is subject to copyright law. All rights are reserved.

This manual may not be copied in part or whole in any form including electronic media without the written consent of RESI. Neither may it be

transferred in any other language suitable for machines or data processing facilities. Also rights for reproduction through lecture, radio

or television transmission are reserved. This documentation and the accompanying software are copyrighted

by RESI. © Copyright 2005 – 2013 by RESI Informatik & Automation GmbH

‘Windows’ and ‘Microsoft’ are registered trademarks of Microsoft

Corporation. ‘Pentium’ is a registered trademark of Intel Corporation. ‘Adobe’, ‘Acrobat’, ‘Acrobat Reader’ and the ‘Adobe Logo’ are

registered trademarks of Adobe System Incorporated. All other trademarks mentioned and shown in the text are trademarks

of their owners and are patented that way

RESI®

Title: RESI-MBUS-MODBUS Manual Date Page of

7.1.2013 2 21

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1 History

Date Editor Description 29.07.08 D. Sudy First Version 01.08.08 Ing. O. Reisky Review 22.08.08 Ing. O. Reisky Changed value count of RESI-MBUS2-MODBUS form 200 to 500 07.10.08 Ing. O. Reisky Version 01.01.00:

Implemented secondary addressing, increased register count per modbus telegram from 50 to 100 � affected firmware versions: 3.1.0 (RESI-MBUS-MODBUS) / 1.1.0 (RESI-MBUS2-MODBUS) and higher

13.01.10 DI HC Sigl Adoption to new converter case 7.1.13 DI HC Sigl Final adoption to new converter

RESI®


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2 Content

RESI-MBUS-MODBUS........................................................................................................................................................ 1

MANUAL............................................................................................................................................................................... 1

1 HISTORY ........................................................................................................................................................................... 2

2 CONTENT .......................................................................................................................................................................... 3

3 GENERAL INFORMATION ........................................................................................................................................... 4

4 CONNECTION DIAGRAMM.......................................................................................................................................... 5

4.1 ASSEMBLING ............................................................................................................................................................. 5

4.2 CONNECTION DIAGRAM ............................................................................................................................................. 6

4.3 WIRING DIAGRAM ...................................................................................................................................................... 8

5 FUNCTIONAL DESCRIPTION ...................................................................................................................................... 9

5.1 FIELD OF APPLICATIONS ............................................................................................................................................. 9

5.2 OPERATION .............................................................................................................................................................. 11

5.3 MODBUS INTERFACE ................................................................................................................................................ 14

5.4 METER-BUS INTERFACE........................................................................................................................................... 18

6 SPECIFICATIONS .......................................................................................................................................................... 19

6.1 DIMENSIONS ............................................................................................................................................................ 19

6.2 ELECTRICAL DATA .................................................................................................................................................. 21

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3 General Information

Since the data from RESI-MBUS-MODBUS converters can be read from any Modbus-Master (automated control, visualisation system etc...) a very broad range of applications becomes possible. For instance data from a heat meter can be easily represented on a mimic display. Each MBUS-MODBUS converter module can read the data from up to 8 / 24 Meter bus unit loads ( 1 unit load corresponds to 1,5 mA current consumption of one participant). Thus maximal 8 / 24 devices each one unit load can be connected to one MBUS-MODBUS Converter. The current consumption of a device can be seen from the respective data sheet. The values to be read are freely configurable and are automatically queryed in selectable periods of time.

• Meter-Bus interface for a maximum 8 / 24 unit loads (1,5 mA)

• Meter-Bus interface: 300 up to 38400 bps, 8 Data bits, even Parity, 1 Stop bit

• Meter-Bus and Modbus interface electrically isolated

• Modbus interface: RS232 or RS485, 9600 up to 57600 bps, 8 Data bits, none Parity, 1 Stop bit

• Modbus adress and query timeout are configurable

• Configuration of up to 100 / 500 Meter-Bus values

• 5 different data types for value representation in Modbus registers

• 24V DC power supply

Type Description Voltage Weight

RESI-MBUS-MODBUS

Meter-Bus to Modbus Converter with RS232 or RS485 interface supporting 8 meters and 100 configurable values, DIP switch for setttings

24 V= 90 g

RESI-MBUS2-MODBUS

Meter-Bus to Modbus Converter with RS232 or RS485 interface supporting 24 meters and 500 configurable values, DIP switch for settings

24 V= 90 g

Technical Data Supply voltage 24 V= operating temperature -40...85 °C Power consumption 1 VA Toleratable Humidity 10...90 % rH non-

condensing Degree of protection IP20 (EN 60529) Modbus Interface Protection Class IP20 Protocol Modbus/RTU Type RS232 or RS485 9600 to 57600 / 8 / N / 1 Dimensions LxHxD 17,5 x 58 x 90 Meter-Bus Interface max. unit loads 8 300 to 38400 / 8 / E / 1 Factory settings Modbus adress 255 Modbus baud rate: 19200 Clamps M-Bus baud rate: 300 max. connector cross-section

2,5 mm² rigid

1,5 mm² flexible CE conformity Yes IT Accessories

RESI-MODBUS-Configurator

Configuration software for RESI Modbus devices

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4 Connection diagramm

4.1 Assembling

RESI-MBUS-MODBUS Converter are designed for the assembling on a 35mm DIN- busbar. At first, put the converter with the upper side(1) on the busbar. In the next step, the clamp lever(2) is to pull down with a screwdriver and than, press the device on the busbar(3). At disassembling, the clamp lever must be pull down(1), with the help of a screwdriver. Now the converter can be lift up with the bottom side(2) from the busbar. In the last step, the converter can be take off with the top side(3).

Assembling Disassembling

MV52041

Illustration 4-1 Assembling instructions for the RESI-MBUS-MODBUS Converter

1

2

3

1 2

3

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4.2 Connection diagram

Illustration 4-2 Wiring instructions for the RESI-MBUS-MODBUS Converter

Dip

Switch Description

Baudrate Use DIP Switches 1+2 to select baudrate: OFF OFF: 9600Bd ON OFF: 19200Bd OFF ON: 38400Bd ON ON: 57600Bd HINT: The correct parity (NONE, EVE or ODD) is configured with the PC software, not via DIP switches!

Interface Select serial interface for MODBUS/RTU Slave OFF=RS232 ON=RS485

Function Definition

Selects special Functions OFF=Use Modbus RTU slave busaddress from FLASH memory ON=Use always Slave address 255

HINT After changing the DIP switches the converter reboots immediately, so no power off or on is necessary. After reboot all the LEDs are on for half a second to signal the power on sequence.

Table 4-1 Description of Dip Switches

Baudrate DIP Switch #1

Baudrate DIP Switch #2

Interface RS232-RS4895

Function Definition

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RESI-MBUS-MODBUS

L+ M-

Power supply L+: 24 V= M-: Ground

A B

RS485 Modbus/RTU slave interface A: DATA+ B: DATA-

Rx Tx M-

RS232 Modbus/RTU slave interface Rx: serial receive Tx: serial transmit M-: Ground for RS232

BUS+ BUS-

Interface to MBUS devices

State State-LED, flashes, when converter is ok MBUS MBUS activity LED, flashes, when MBUS

telegrams are on the bus Host HOST-LED, flashes, when host sends/receive

MODBUS/RTU telegrams

Table 4-2 Description of connectors

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4.3 Wiring diagram

MBUS+

MBUS-

+24V=

GND

RS

485,

DA

TA

+

RS

485,

DA

TA

-

RS232, TX

RS232, RX

RS232, GND

MBUS Meter

Load 1,5mA

M+ M-

MBUS Meter

Load 1,5mA

M+ M-

Max 8/24 loads

Illustration 4-3 wiring diagram of converter

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5 Functional Description

RESI-MBUS-MODBUS Converter automatically read out values of meters with a MBUS interface and stores the values in internal Modbus Holding registers. The converter can hold up to 100/500 MODBUS 16 bit values. A host system can read out asynchronously the stored values via MODBUS RTU master functionality. The physical connection is done via RS232 or via RS485 interface. After switching on the power supply, the converter checks for a valid configuration and initializes all registers to Zero. If there is no valid configuration or an other error occurred, the state indicator flahes every second, oherwise if startup was successful it flashes every two seconds. The power on sequence is signalled with a short flash of all the LEDs in the converter. To configure the meters, please use our free software MODBUSConfigurator.exe, which you can download from our homepage www.RESI.cc. Please refer to our online help system for more details about the configuration process of meters and the mapping to MBUS registers. Use this link: http://www.resi.cc/resiwiki/index.php/MBUS_products

5.1 Field of applications

This chapter shows typical applications, where our converter can be used.

5.1.1 Use with a SCADA system

Many SCADA systems offer the possibility to install a MODBUS/RTU master driver. With this driver, you can read the converted MBUS values directly from our converter. See the graphics below:

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5.1.2 Use with a PLC

PLC systems offer MODBUS RTU interfaces. With this interface you can read out the converter values via RS232 or via RS485. See the graphics below:

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5.2 Operation

Below the operations in graphic structure

Illustration 5-1 Operation diagram

start

check configuration

configuration ok ?

yes

no

Modbus communication

normalisation

read values

wait 20s

query timeout - 20 s

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Illustration 5-2 Operation diagram of the counter initialize (-normalisation)

normalisation

couter = 1

attempts = 3

counter configured?

yes

no

initialize counter attempts = attempts - 1

initialize successful?

yes

no

attempts > 0?

yes

no

counter = counter + 1

counter > 8 or 24?

yes

no

stop

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Illustration 5-3 Operation diagram of the data sampling

value reading

counter = 1

attempts = 3

counter initialized?

yes

no

read data from counter attempts = attempts - 1

reading ok?

yes

no

attempts > 0?

yes

no

counter = counter + 1

counter > 8 or 24?

yes

no

stop

further telegram?

no

yes

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5.3 Modbus interface

For communication via Modbus RTU protocol the following Modbus features are available: • READ HOLDING REGISTER (function code: 3) • PRESET SINGLE REGISTER (function code: 6) • PRESET MULTIPLE REGISTERS (function code: 16) Special note: The features READ HOLDING REGISTER and PRESET MULTIPLE REGISTERS are confined on a max. of 100 registers per telegram! Register overview:

Illustration 5-4 Register map

value range

counter information range

configuration range *)

command range

reserved range *)

reserved range *)

counter 1

....

counter n

state

identification number

identification number

reboot

reserved *)

reserved *)

RESI-MBUS-MODBUS RESI-MBUS2-MODBUS

value range 4x00001 – 4x00200 4x00001 – 4x01000

counter information range 4x02001 – 4x02024 4x02001 – 4x02072

configuration range 4x03001 – 4x03244 4x03001 – 4x04124

command range 4x06001 – 4x06003 4x06001 – 4x06003

reserved range 4x07001 – 4x07130 4x07001 – 4x07130

4x65200 – 4x65535 4x65200 – 4x65535

unused range

*) This ranges are reserved for the configuration s oftware and may not be written

during operation.

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5.3.1 Dataformats of value range

Following all data formats a value can be represented in, are described. 16 bit signed binary:

representation in the value list

description

4x00001 This data format is qualified for the representation of small integer values. value range: -32768 till 32767 representation: 2’s compliment

16 bit value

4x00200 32 bit signed binary:


description

4x00001 This data format is qualified for the representation of big integer values . value range: -2147483648 till 2147483647 representation: 2’s compliment

lower 16 bit of the value higher 16 bit of the value

4x00200 32 bit IEEE floating-point number:


description

4x00001 Used for representation of very big integer and real numbers. value range: 1,175495e−38 bis 3,40282346e+38 representation: IEEE floating-point 32 bit

lower 16 bit of the value higher 16 bit of the value

4x00200 Special note: This data typ has a limited accuracy. By using, there may be minor deviation of the reading values and the values which will be shown at the counter. This variations are system-related and no reason for reclamation!

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32 bit IEEE floating-point number inverted:


description

4x00001 Used for representation of very big intager and real numbers. value range: 1,175495e−38 bis 3,40282346e+38 representation: IEEE floating-point 32 bit

higher 16 bit of the value lower 16 bit of the value

4x00200 Special note: This data typ has a limited accuracy. By using, there may be minor deviation of the reading values and the values which will be shown at the counter. This variations are system-related and no reason for reclamation! 32 bit date- & time format: Because the date – and time format of the M-Bus specification needs some shifting – and masking operations, this data typ has been created. It offers a continuous representation which makes the interpretation of the data less difficult. The converter executes the needed shifting operations internally, so the interpretation in the higher-ranking system will be simplified.


description

4x00001 This data format is qualified for the representation of the M-Bus data typs G and F.

time slice date slice

4x00200 time slice (lower 16 bit)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

0 hours (0 – 23) 0 minutes (0 – 59)

date slice (higher 16 bit)

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

year (0 – 99) month (0 – 12) day (0 – 31)

If the M-Bus counter transmitted only one date, the time slice is 00:00.

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5.3.2 Counter information range

In the counter information range, the state and the identification number of the counter can be read. For each counter there are 3 subsequent registers intended ( shown in register map 5.2). METERSTATEx (1. register)

Holding Register (4x02001, 4x02004, ... , 4x02070)

initialization value: 0

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

METERSTATE

METERIDx (2. Register)



15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

METERID LOW WORD

METERIDx (3. Register)



15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

METERID HIGH WORD

Value Description METERSTATE State of the meter

The state shows, if the register of the value range are invalid or out of date. Werte: 0: Meter not configured 1: Meter wasn’t successfully normalized since startup 2: No data was queryed, or meter did not answer to a query 3: The latest data query was successful and the data in the value range are actual

METERID Counter identifications numer from the head of the M-Bus protocol Identification number as signed 32 bit binary digit in 2 Modbus register.

5.3.3 Command range

With the help of the register 4x06001, the converter can be rebooted when value 1 is written to the register. The converter gives no answer to the command, when rebooting was successful.

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5.4 Meter-Bus interface

In the table bellow a summary of the M-Bus master specifications is shown: Function Support communication according EN1434-3 X primary addressing X secondary addressing X FCB mechanism X initializing of a meter (SND_NKE) X sending data to the meter (SND_UD) reading of class 2 data (REQ_UD2) X reading of class 1 data (REQ_UD1) receive of counter data (RSP_UD) X multiple telegram answer X fixed data structure X variable data structure X integer data typ X real data typ X BCD data format X variable data format primary VIFs (VIF = Value Information Field) X plain text VIF linear VIF extension X manufacturer specific VIFs manufacturer specific values baud rate 300 bis 38400

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6 Specifications

6.1 Dimensions

Illustration 6-1 dimension illustration

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Dimensions Mounting dimensions L x H x T (mm) 17,5 x 58 x 90 Weight 90 g Colour Grey (RAL 7035) Material PPO self extincted Protection class IP20 based on DIN 40050/EN 60529

Table 6-1 Data of enclosure

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6.2 Electrical Data

Voltage, Current, Temperature Power supply

Rated voltage 24 V= Admissible range 18 V= up to 30 V=

Current drain typ. 36 mA= max. 55 mA=

max. inrush current 100 mA= (20 ms) Working temperature 0 °C up to 60 °C Storage temperature -20 °C up to 85 °C humidity (non condensing) 10...90 % rH Protection class IP20 CE conformity yes

Table 6-2 General electrical data

Clamps Clamp capacity 1,5 mm² Clamping torque 0,8 ... 1 Nm Screws Pozidrive 1

Table 6-3 Clamp data

Modbus interface Interface RS232 or RS485 Connector variant On clamps Potential separation To MBUS interface Power supply for external devices No Indicator Yes

Settings 9600 up to 57600 Baud, 8 Data bits, none parity, 1 Stop bit via DIP switches

Protocol Modbus / RTU Slave

Table 6-4 Data of Modbus interface

Meter-Bus interface RESI-MBUS-MODBUS RESI-MBUS2-MOD BUS Interface Meter-Bus Connector variant On clamps Potential separation To Power supply and Modbus interface Power supply for external devices (á 1,5 mA per participant)

max. 8 max. 24

Indicator Send and receive

Settings 300 up to 38400 Baud, 8 Data bits, none parity, 1 Stop bit

Protocol Meter-Bus Cable (according to. M-Bus standard) JYStY N x 2 x 0,8 mm max. cable length 350 m max. cable capacitance 180 nF

Table 6-5 Data of Meter-Bus interface

Documents

RESI-MBUS-MODBUS Manual - Home - Shop Online - Marcom … · RESI® RESI Informatik & Automation GmbH Date: 7.1.2013 Customer: Pages Version: 3.1 Title: RESI-MBUS-MODBUS Manual Edited