AAEON PFM-HDS User Manual
Page 34
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P C / 1 0 4 M o d u l e
P F M - H D S
Chapter 2 Quick Installation Guide
2-22
Pin
Pin Name
Signal Type
Signal Level
1 DCD4
IN
2 DSR4
IN
3 RXD4
IN
4 RTS4 OUT ±9V
5 TXD4 OUT ±9V
6 CTS4
IN
7 DTR4 OUT ±9V
8 RI4
IN
9 GND GND
2.28 COM2 RS232/422/485 Connector (CN25)
RS-232
Pin
Pin Name
Signal Type
Signal Level
1 DCD2
IN
2 DSR2
IN
3 RXD2
IN
4 RTS2 OUT ±9V
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