User manual

21 TPC-1250H/1550H/1750H User Manual
Appendix A Jumper and Dip Switch setting Pin Assignment
A.2 Pin Assignment
COM1 COM2
PIN RS-232 RS-422 RS-485
1NDCDTX-D-
2NRXTX+D+
3NTXRX+
4NDTRRX-
5 GND GND GND
6NDSR
7NRTS
8NCTS
9NRI
12345
6789