Solvline Eddy DKV2.1.0.3 - Manual (Page 57)

Chapter 3. Development
Environment
57
2.6.2.6. J13, 14 : COM Port 3 & Port 4
RS422 Full Duplex
Pin Signal Description
1 TXD+ Transmit differential data positive (Output)
2 TXD- Transmit differential data negative (Output)
3 GND Ground
4 RXD+ Receive differential data positive (Input)
5 RXD- Receive differential data negative (input)
RS485 Half Duplex
Pin Signal Description
1 TRX+ Transmit/Receive differential data positive
2 TRX- Transmit/Receive differential data negative
J15 : Debug Port
You can confirm debug massage and information of state through debug port.
Environment Configuration