User Manual

Quick Installation Guide
EBM-A50M Quick Installation Guide
17
2.3.15 Serial port 1 connector (COM1)
In RS-232 Mode
Signal
PIN
PIN
Signal
DCD1
1
2
RxD1
TxD1
3
4
DTR1
GND
5
6
DSR1
RTS1
7
8
CTS1
RI1
9
NC
In RS-422 Mode
Signal
PIN
PIN
Signal
TxD1-
1
2
RxD1+
TxD1+
3
4
RxD1-
GND
5
6
NC
NC
7
8
NC
NC
9
NC
In RS-485 Mode
Signal
PIN
PIN
Signal
DATA1-
1
2
NC
DATA1+
3
4
NC
GND
5
6
NC
NC
7
8
NC
NC
9
NC