P C / 1 0 4 M o d u l e
P F M - H D S
Chapter 2 Quick Installation Guide
2-21
2.26 COM3 RS232 Connector (CN23)
Pin
Pin Name
Signal Type
Signal Level
1 DCD3
IN
2 DSR3
IN
3 RXD3
IN
4 RTS3 OUT ±9V
5 TXD3 OUT ±9V
6 CTS3
IN
7 DTR3 OUT ±9V
8 RI3
IN
9 GND GND
2.27 COM4 RS232 Connector (CN24)