AAEON AHP-2173 User Manual
Page 20
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T o u c h P a n e l P C
A H P - 2 1 7 3
Chapter 2 Quick Installation Guide
2 - 4
2.2 COM1/2/3 RS-232/422/485 Serial Port Connector
COM1/COM3 RS-232 (D-sub 9 male)
Pin
2B
Signal
Pin
3B
Signal
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
COM2 RS-232/422/485 (D-sub 9 male)
Pin
Signal
Pin
Signal
1
DCD
(422TXD-/485DATA-)
2
RXD (422RXD+)
3
TXD
(422TXD+/485DATA+)
4
DTR (422RXD-)
5
GND
6
DSR
7
RTS
8
CTS
9
RI/+5Volt/+12Volt
1
2
4
5
6
7
8
9
1
2
4
5
6
7
8
9
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