Modbus / BACnet IP Gateway GT200-BM-2RS V1.5

Modbus / BACnet IP Gateway

GT200-BM-2RS

909-977-2988

The GT200-BM-2RS gateway seamlessly bridges the gap between Modbus RTU and BACnet IP networks. Designed for effortless integration, this powerful gateway supports leading BMS controller manufacturers, including Johnson Controls, Honeywell, and Carrier. Featuring dual independent RS485 serial ports, it provides enhanced flexibility and control, ensuring a smooth, reliable connection between your Modbus devices and BACnet network.

Technical Specification
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BACnet/IP Features

Supports protocol conversion between BACnet/IP and Modbus serial.
Ethernet self-adaptive with IP address conflict detection and automatic routing for reliable networking.
Provides online scanning and configuration for efficient device management.
Supports BACnet/IP services: Who-Is, I-Am, Who-Has, I-Have, Read Property, Write Property, Read Property Multiple.
Supports up to:
- 500 Binary Inputs (BI)
- 300 Binary Outputs (BO)
- 300 Binary Values (BV)
- 500 Analog Inputs (AI)
- 300 Analog Outputs (AO)
- 300 Analog Values (AV)
- 500 Multi-State Inputs (MSI)
- 100 Multi-State Outputs (MSO)

Modbus Serial Features

Each serial port supports up to 100 Modbus commands.
Dual RS485 ports with half-duplex communication.
Baud rate options: 9600, 19200, 38400, 57600, 115200 bps.
Configurable parity: none, odd, even, mark, and space.
Selectable stop bits: 1 or 2 bits.
Each RS485 port includes 1kV galvanic isolation for signal integrity and device protection.

General

Redundant dual power inputs for enhanced reliability.
Power supply: 24VDC (range: 11–30VDC), 90mA @ 24VDC.
Operating temperature: -20°C to 60°C (-4°F to 140°F).
Humidity: 5% to 95% RH (non-condensing).

Physical Features

Dimension (W*H*D): 1.6 in * 5 in * 4.33 in (40 mm * 125 mm * 110 mm).
Mounting: 35mm DIN rail.
Protection rating: IP20.

File	Type	Time	Download

Hardware Connection

Install the gateway on 35 mm / 13.8 in DIN Rail.
Connect the power to the power supply.
Please do not power on the devices before finishing and confirming all the connections.

Optional: Connect power supply II for backup redundancy.
Connect Modbus serial devices using the RS-485 interfaces.
Connect the GT200-BM-2RS with your computer via Ethernet cable.
With the configuration switches located on the bottom of the gateway, set both Bit 1 and Bit 2 to 0.
Power on the GT200-BM-2RS.

Software Configuration

Download, install, and run the configuration software, SST-BM-CFG. For more details, see Chapter 5 of the manual.

Upload the setting from the gateway by clicking "Search Equipment" on the left. Find the GT200-BM-2RS gateway on the list, click it and click "Configuration" on the left.
Note: If you cannot find the GT200-BM-2RS gateway, check your Hardware configuration or your network configuration. This is a default configuration created by SST Automation. If you would like to create a configuration from the beginning simply click "New".
Click "BACnet IP Server" under the Device Window and configure the settings to your needs under the Configuration Window.
Click the"Modbus Master" of choice under the Device window to configure the Modbus Master. (User Manual 5.3.2)
To add a node, right click the Modbus Master you wish to add the node to and proceed to click the "Add Node" operation.
Then configure the node. (User Manual 5.3.3)
To add a command, right click the node you wish to add the command to and proceed to click the "Add Command" operation. Double click on the commands you wish to add to the Node.
Configure the command (User Manual 5.3.3)
Once configuration is complete, click "Download" to download your configuration into GT200-BM-2RS.
Note: To reset GT200-BM-2RS, you can either disconnect it from power or remotely reset it in the SST-BM-CFG software: select it, and select Remote Reset.
Test the communication.

For more information, please refer to the User Manual for GT200-BM-2RS.