AAEON PFM-LNP User Manual
Page 24
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P C / 1 0 4 C P U M o d u l e
P F M - L N P
Chapter 2 Quick Installation Guide
2-12
7
DTR#1
8
RI#1
9
GND
2.21 RS-232/422/485 Serial Port Connector (COM2)
Pin
Signal
1
DCD#2(422TXD-/485DATA-)
2
DSR#2
3
RXD2(422RXD+)
4
RTS#2
5
TXD2(422TXD+/485DATA+)
6
CTS#2
7
DTR#2(422RXD-)
8
RI#2/12V/5V
9
GND
2.22 RS-232 Serial Port Connector (COM3)
Pin
Signal
1
DCD#3
2
DSR#3
3
RXD3
4
RTS#3
5
TXD3
6
CTS#3
7
DTR#3
8
RI#3
9
GND
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