User Manual

Quick Reference Guide
AID-173M Quick Reference Guide
11
2.2.2 External Serial Port 2 connector (COM2)
In RS-232 Mode
Signal
PIN
PIN
Signal
DCDB#
1
2
RXDB
TXDB
3
4
DTRB#
GND
5
6
DSRB#
RTSB#
7
8
CTSB#
RIB#
9
In RS-422 Mode
Signal
PIN
PIN
Signal
TxD1-
1
2
TxD1+
RxD1+
3
4
RxD1-
GND
5
6
NC
NC
7
8
NC
NC
9
In RS-485 Mode
Signal
PIN
PIN
Signal
DATA1-
1
2
DATA1+
NC
3
4
NC
GND
5
6
NC
NC
7
8
NC
NC
9