Protocol
Both RS485 and IP I/O modules work with Modbus protocol by default. Protocol configuration can be adjusted by changes on the 4th and 5th bit of the S3 DIP switch according to the table:
4 | 5 | Protocol |
|---|---|---|
Off (0) | Off (0) | Modbus RTU (in IP modules: Modbus TCP/IP) |
Off (0) | On (1) | Modbus ASCII |
On (1) | Off (0) | BACnet master (in IP modules: BACnet IP) |
On (1) | On (1) | BACnet server |
Protocol selection
Warning!
The BACnet slave mode does not support the discover function.