Advantech TPC-1261H - Manual (Page 56)

TPC-1261H User Manual 46
PIN RS-232 RS-422 RS-485
1 NDCD TX- D-
2 NRX TX+ D+
3 NTX RX+
4 NDTR RX-
5 GND GND GND
6 NDSR
7 NRTS
8 NCTS
9 NRI