Modbus / BACnet IP Gateway
GT200-BM-2RS
GT200-BM-2RS Quick Start Guide
Product Appearance
Wiring
- 1. 1.35mm DIN Rail Installation.
- 2. Connect the gateway power interface to the power supply.
Pin Function 1 Power GND 2 NC(Not Connected) 3 24V+,DC Positive 24V 
- 3. Connect the Gateway’s RJ45 interface to the computer with a RJ45 cable.
- 4. Power on the gateway. Run the SST-BM-CFG to start the gateway configuration.
LED Status Indicators
| LED | State | Description |
| ENS | Green On | BACnetIP connection is established |
| Flashing Green | BACnetIP connection is not established | |
| Red On | IP Address Conflict | |
| Flashing Red | DHCP, BOOTP, IP address conflict detection | |
| SNS | Green On | BACnetIP connection is established |
| Flashing Green | BACnetIP connection is not established | |
| Flashing red and green alternately | Use locating function (User Manual 5.4) | |
| ENS&SNS (Orange) | Simultaneously On | The gateway is starting up |
| Flashing Alternately | Configuration Mode | |
| Serial I/II TX | Flashing Green | Serial data sending |
| OFF | No serial data is sending | |
| Serial I/II RX | Flashing Green | Serial data sending |
| OFF | No serial data is sending |
DIP Switch or Function Button
| Mode (Bit 1) | Function (Bit 2) | Mode | Description |
| Off | Off | Run | Allows to configure. |
| Off | On | Run | Dones not allow to configure |
| On | On/Off | Config | IP address is fixed at 192.168.0.188. Allows to configure but no data communication. |
Software Configuration
- 1. Run the SST-BM-CFG software installed on your computer.
- 2. Click "BACnet IP Server" in the tree view on the left, set the Ethernet parameters.
- 3. Click "Modbus Serial" in the tree view on the left and set the serial communication parameters.
- 4. Add serial node and commands under the "Modbus Serial".
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5. Click download button, select the GT200-BM-2RS model and then click on "Download".
For more information, please refer to the GT200-BM-2RS manual.
Communication Instructions
- 1. Connect RS485 serial devices to the gateway serial interface. Please refer to the gateway manual for specific connection methods.
- 2. Observe the indicator lights to check the communication status.