Solvline Eddy DKV2.1.0.3 - Manual (Page 34)

Chapter 3. Development
Environment
34
2.4.4.2. COM Port 1 & COM Port 2
RS232
Pin Signal Description
1 DCD Data Carrier Detection (Input) (COM Port 1 only)
2 RXD Receive Data (Input)
3 TXD Transmit Data (Output)
4 DTR Data Terminal Ready (Output) (COM Port 1 only)
5 GND Ground
6 DSR Data Set Ready (input) (COM Port 1 only)
7 RTS Request to Send (Output)
8 CTS Clear to Send (Input)
9 RI Ring Indicator (Input)
2.4.4.3. COM Port 3 & COM 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)