RS485/RS232 schema

If you're using Modbus RTU, connect the provided terminal blocks to the RS485/RS232 port, using the following pin-out:

PinRS485RS232
1RS485_NEGRS232_TXD
2RS485_POSRS232_RTS
3GNDGND
4NCRS232_CTS
5NCRS232_RXD
6GNDGND

RS485 / RS232 interface pin numbering

RS485 / RS232 interface pin numbering