Com 1, Com 3/4, And Com 5/6 - Advantech EPC-R4710 User Manual

2.3.3

COM 1, COM 3/4, and COM 5/6

COM1 can only be used as RS232 with 2 wires.
Pin Description
1 NC
2 COM4_RXD
3 COM4_TXD
4 NC
9 NC
COM 3 and COM 4 can only be used as RS232 with 4 wires.
COM3:
Pin Description
1 NC
2 COM3_RXD
3 COM3_TXD
4 NC
9 NC
COM4:
Pin Description
1 NC
2 COM4_RXD
3 COM4_TXD
4 NC
9 NC
Pin Description
5 GND
7 NC
8 NC
9 NC
Pin Description
5 GND
6 NC
7 COM3_RTS
8 COM3_CTS
Pin Description
5 GND
6 NC
7 COM4_RTS
8 COM4_CTS
9 EPC-R4710 User Manual