
PC/104 Module PFM-HDS
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)
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