Technical DataΒΆ
The MODBUS operating mode and the interface parameters are set in the PLC configuration: Configuring MODBUS RTU on serial interface
Description of the MODBUS protocol:
| Supported standard | See Serial interface: Configuring MODBUS RTU on serial interface |
| Number of connection points | 1 client Max. 1 server with RS-232 interface Max. 31 servers with RS-485 |
| Protocol | MODBUS |
| Operating mode | Client/server |
| Address | Server only |
| Data transmission control | CRC16 |
| Data transmission speed | Up to 187.500 baud (see Serial interface: Configuring MODBUS RTU on serial interface |
| Encoding | 1 start bit 8 data bits 1 or 2 stop bits 1 parity bit (see Serial interface: Configuring MODBUS RTU on serial interface |
| Max. cable length for RS-485 | 1.200 m at 19.200 baud |