C-Bus BACnet Gateway (5000BACnet) The C-Bus BACnet Gateway is an embedded device that provides a field bridge between Clipsal C-Bus lighting control systems and building management systems that support the BACnet open protocol. About BACnet BACnet is a communication protocol for Building Management Systems (BMS). This protocol is managed by an independent organisation under the banner of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, ASHRAE. The C-Bus BACnet Gateway is a device known as a BACnet Building Controller or B-BC. The BACnet Building Controller contains software and firmware which perform the functions required to allow C-Bus group addresses to be converted into BACnet objects and vice versa. When connected to a BACnet system the C-Bus BACnet Gateway can be scanned and its internal objects will automatically be discovered by the BACnet system. These objects are used to create the interaction between the BMS and the C-Bus lighting control system.

Connecting C-Bus to BACnet The C-Bus BACnet Gateway provides 255 group addresses from a single application address. If more than one application address is necessary or more than 255 group addresses need to be mapped, then additional gateway devices will be required. Each BACnet object contains properties which provide details of the C-Bus group address. One of these properties is the analogue value, which in C-Bus can be represented in different ways. As an analogue value from 0 to 255;

Representing the level of the group.

As a percentage from 0 to 100%; Representing the level of the group.

The C-Bus BACnet Gateway contains a pre-configured mapping table which provides the following connectivity. BACnet analogue value read objects;

Allows BACnet to read analogue values from C-Bus.

BACnet analogue value write objects;

Allows BACnet to write analogue values to C-Bus.

C-Bu

s BA

Cnet

Gat

eway

Connecting C-Bus to BACnet The C-Bus BACnet Gateway exposes some of the properties of each C-Bus group address to BACnet as two separate BACnet objects; see below. In BACnet priority levels are used when two systems attempt to control the same point. The C-Bus BACnet Gateway expects commands using priority 16. For the Analogue write object the gateway performs processing after receiving the value from the Building Management System (BMS), but only if this is received as a priority 16 command. When the BMS system writes a value to the Gateway this is passed onto C-Bus through the C-Bus PC interface.

C-Bus will only transmit values over the network if the value is seen to change. After sending the value onto C-Bus and receiving an acknowledgement of transmission, the gateway automatically resets its internal value for the object to a null value of 102. As the BMS must write a value of between 0 and 100, this is always seen as a change and therefore any transmission from the BMS, even a reassertion of a previous value will be transmitted onto C-Bus. The C-Bus BACnet Gateway can be connected to BACnet over Ethernet via BACnet I/P or using a serial connection via BACnet MSTP.

C-Bus Object Definition

Application Address

48 to 95 Dec.

Group Address 0 to 254

Group Description

User Defined

“Group n”

Group Value Analogue 0 to 255

0 to 100%

BACnet Object Definition

Object Name

readgavn_1

Value 0 to 100 Description Read ANI from GA n

BACnet Object Definition Object Name

Writegav(n+300)_1

Value 0 to 100 Description Group Address 000

Dimmer (AVn+300)

C-Bus BACnet Gateway Object Naming Conventions

C-Bus Group Addresses

BACnet Analogue Value “Object Name”

Permitted Value Range

BACnet Analogue Value “Description”

0 to

254

readgav000_1 to

readgav254_26 0 to 100

Read ANI from GA 000 to

Read ANI from GA 254

C-Bus Group Addresses

BACnet Analogue Value “Object Name”

Permitted Value Range

BACnet Analogue Value “Description”

0 to

254

writegav300_1 to

writegav554_26 0 to 100

Group Address 000 Dimmer (AV300) to

Group Address 254 Dimmer (AV554)

n=group address 0-254

n=group address 0-254

n=group address 0-254

Typical C-Bus to BACnet Site Application Schematic

BACnet Integration

Layer

2 3 4

5

2

6

Unit

A/L A/L

C-Bus CONNECTIONS

Auxiliary Input

1A 1B 2B 2A 3A 3B 4B 4A

Blind Control

Light Level

Sensor Temperature

Sensor

Auxiliary Inputs

CloseC-Bus Shutter Relay

C-Bus CONNECTIONS

Close Shutter Relay C-Bus

C-Bus CONNECTIONS Close

Shutter Relay C-Bus C-Bus CONNECTIONS

SW OPEN CLOSE

SW OPEN CLOSE A/L SW OPEN CLOSE

SW OPEN CLOSE

Colour Touch Screen

PIR Detectors

Building Management

System A

Building

Management System B

C-Bus BACnet Gateway

C-Bus BACnet Gateway

Network 2 Network 1

PC Interface

Network Bridge Professional dimmer

DLT Switch Wall Switch 3

9

L1L2L3

C-Bus

Unit

unitstatus

C-Bus CONNECTIONS

PC Interface

Unit

C-Bus CONNECTIONS

2

8

5

110 1

4

12

Voltage Free Relay

N A/L 1A 1B 2B2A 3A 3B 4A 4B 5A 5B 6A6B

7A 7B 8A 8B 9A 9B 10A 10B 11A 11B 12A 12B

Relay Outputs

C-Bus

C-Bus CONNECTIONS

3

7

4

8

1A 1B 2B 2A 3A 3B 4A 4B

5A 5B 6A 6B 7A 7B 8A 8B

N A/L

Voltage Free Relay

PC Interface

Infra Red Transmitter/Receivers

Relay Outputs

1 2 3

Professional Dimmer

4 5 6

mode Phases Continues Network 2

Continues Network 1

C-Bus BACnet Gateway Configuration The C-Bus BACnet gateway is supplied pre-configured from the factory. Some parameters need to be supplied by the customer to permit this configuration to occur. Message transfer in a BACnet network relies on each device's connection to a network having a unique address within the entire internetwork. This address is comprised of a pair of numbers.

The first number is referred to as the MAC (Medium Access Control) address, which must be unique on the local network segment to which it is connected.

The Medium Access Control setting is a BACnet address parameter and is not related to an Ethernet MAC address.

The second part of every device's address is the device instance number. This number is required to be unique throughout the entire BACnet network.

C-Bus BACnet Gateway Connections

I/P based unit configuration

Property Default Permitted Range

BACnet Medium Access Control Address

01 0 to 99

I/P Address* 192.168.168.XXX (see note below)

Any valid I/P address

Subnet mask 255.255.255.0 Any valid

Subnet mask

Default Gateway 0.0.0.0 Any valid default gateway

address

BACnet Device Instance Number 24000 0 to 3FFFFF Hex

0 to 4194303 Dec

C-Bus Lighting Application 38 Hex 56 Dec

30 to 5F Hex 48 to 95 Dec

Serial MSTP unit configuration

Property Default Permitted Range

BACnet Medium Access Control Address

01 0 to 99

BACnet Device Instance Number 24000 0 to 3FFFFF Hex

0 to 4194303 Dec

C-Bus Lighting Application 38 Hex 56 Dec

30 to 5F Hex 48 to 95 Dec

Baud Rate 76.8K Baud 9.6K to 76.8K

* If the default I/P address is selected then the last three digits are selectable by switches on the device. In addition the BACnet Medium Access Control address will automatically be equal to the last 2 digits of the selected default I/P address. The switches are set by Clipsal to 001.

During the order entry process Clipsal will issue a site specific configuration form for completion by the customer to provide all required configuration data.

Technical Data

BACnet Gateway

Enclosure Dimensions

Parameter Description

Power 26 V DC ±10%, 10 W

24 V AC ±10%, 50–60 Hz, 24 VA.

Battery

10-year Lithium CR123A battery maximum of 720 hours data retention

during power outages. To conserve battery life, battery backup turns off after a specified

number of days defined in the module driver.

Port E1 Ethernet, 10/100 Base-T, half duplex.

Port S1 MS/TP, EIA-232 or EIA-485 (9600 bps - 76.8 kbps) or a third-party device and protocol at various baud rates.

Port S2 C-Bus PC Interface, EIA-232.

Microprocessor

32-bit Motorola Power PC microprocessor with cache memory,

Fast Ethernet controller, high performance 32-bit communication

co-processor.

Memory 16 MB non-volatile battery-backed RAM, 8 MB Flash memory, 32-bit

memory bus.

Real-time clock Battery-backed real-time clock keeps track of time in event of power failure.

Status indicators

LED’s indicate status of communications and low battery status. Seven-segment display

indicates running, error, and power status.

Environmental operating range

-29 to 60°C (-20 to 140°F) 10–90% relative humidity, non-condensing.

Dimensions Width: 28.7 cm (11 5/16 in).

Height: 19 cm (7 ½ in).

Weight 640 g (1.4 lbs).

BACnet support

Conforms to the Advanced Application Controller (B-AAC) Standard Device Profile as defined in ANSI/ASHRAE

Standard 135-2004 Annex L.

C-Bus PC Interface

Parameter Description

C-Bus input voltage 15 - 36 V DC; does not provide current to the

C-Bus network.

Current drawn 32 mA.

Electrical isolation rating

500 V RMS continuous C-Bus / RS-232.

Terminals C-Bus: 2xRJ45

BACnet Gateway: 2xRJ45 PC: 1xDB9.

Dimensions 72mm x 85mm x 65mm

(H x W x D). Mounting type DIN rail.

Weight 104 g. Operating

Temperature 0 - 45°C.

Operating humidity range

10-95 % relative humidity,

non-condensing. Firmware Version Must be Rev 4.4 or later

Power Supply

Part Number

Parameter Description

Input Requirements 85 - 264 V. AC, 50/60 Hz.

Output 25 V DC, 40 W.

Overload Protection 105% - 150% constant

current limiting, auto-recovery.

Terminals

Input: line, neutral, ground. Output: two +V wired

two -V wired. Other: DC OK relay contact.

Dimensions 90 mm x 40 mm x 100 mm

(H x W x D). Mounting type DIN rail.

Working Temperature -20 to 60°C. Operating humidity

range 10 - 95 % relative

humidity, non-condensing.

Description. Catalogue Number.

C-Bus BACnet Gateway.

(BACnet Gateway, Serial cable, C-Bus PCI, Power supply and

Enclosure).

5000BACnet

Clipsal Australia Pty Ltd A member of Schneider Electric

Head Office 33-37 Port Wakefield Road, Gepps Cross, South Australia 5094

CIS Technical Support Hotline: Australia 1300 722 247 New Zealand 0800 888 219 Northern Asia +852 2484 4157 (Hong Kong) South Africa 011 314 5200 Southern Asia +603 7665 3555 x236 or 242 United Kingdom +44 870 608 8 608

Technical Support Email cis_support@clipsal.com.au

National Customer Care Enquiries:

1300 2025 25 National Customer Care Facsimile:

1300 2025 56 New Zealand Schneider Electric (NZ) Ltd Tel +64 9 576 3403

Malaysia Clipsal Integrated Systems (M) Sdn. Bhd. Tel +60 3 7665 3555

Singapore Clipsal Integrated Systems Pte Ltd Tel +65 6415 3232/3233

China Clipsal China Limited Tel +86 755 8237 5959

Greece Schneider Electric AE Tel +30 69 4646 3200

Hong Kong Clipsal Integrated Systems (HK) Limited Tel +852 2487 0261

India Schneider Electric India Pvt Ltd Tel +91 11 5159 0000

Indonesia PT Clipsal Graha Nusa Tel +62 21 630 6430

Korea Clipsal Korea Co. Ltd Tel +82 549 5550

Pakistan Clipsal Pakistan (Pvt) Ltd Tel +92 21 506 7278

Philippines Clipsal Philippines Inc. Tel +632 683 0275-78

South Africa Clipsal South Africa (Pty) Ltd Tel +27 11 314 5200

Taiwan Clipsal (Taiwan) Co Ltd Tel +886 2 2558 3456

Thailand Clipsal Thailand Ltd Tel +66 2 952 5338-42

United Arab Emirates Clipsal Middle East Tel +971 6 5570 777

United Kingdom Clipsal Integrated Systems c/o Schneider Electric Tel +44 870 608 8 608

Vietnam Clipsal - VTEC Tel +848 856 3002

You can find this datasheet and many others online in PDF format at: clipsal.com

clipsal.com/cis

Clipsal Australia Pty Ltd reserves the right to change specifications, modify designs and discontinue items without incurring obligation and while every effort is made to ensure that descriptions, specifications and other information in this catalogue are correct, no warranty is given in respect thereof and the company shall not be liable for any error therein.

© Clipsal Australia Pty Ltd This material is copyright under Australian and international laws. Except as permitted under the relevant law, no part of this work may be reproduced by any process without prior written permission of and acknowledgement to Clipsal Australia Pty Ltd. The identified trademarks and copyrights are the property of Clipsal Australia Pty Ltd unless otherwise noted.