Advantech TPC-1261H - Manual (Page 55)

45 Appendix A
A.2 COM4 Setting
The serial port COM4 on the TPC-1570H is adjustable. It can be set to
RS-232, RS-422 or RS-485. This port is designed with auto data flow
control capability. In other word, the TPC-1570H can automatically
detect the data flow direction at this port when the two wired RS-485
communication is activated.
COM4 Mode S1 and S2 setting
RS232 Mode
RS485 Mode
RS422 Master Mode
RS422 Slave Mode
6
5
9
1