User manual

TPC-66/68 Series User Manual 58
Appendix C Pin Assignments
C.1 RS-232 Pin Assignment
C.2 RS-485 Pin Assignment
C.3 COM Port Setting
TPC-66/68 panel computers provide three COM ports: RS-232 (COM1
and COM2), 4-wire RS-232 (COM3) and RS-485 (COM4). COM3 and
COM4 share the same DB9 connector. Its setting, COM3 or COM4, is
through software.