Aaeon EPIC-QM77 Manual page 54

E P I C B o a r d
4
5
6
7
8
9
COM2 (RS-232)
Pin
1
2
3
4
5
6
7
8
9 RI#2/+5V/+12V
COM2 (RS-422)
Pin
1
2
3
4
5
6
7
Chapter 2 Quick Installation Guide
DTR#1
GND
DSR#1
RTS#1
CTS#1
RI#1
Pin Name
DCD#2
RXD#2
TXD2
DTR#2
GND
DSR#2
RTS#2
CTS#2
Pin Name
422TXD-
422TXD+
422RXD+
422RXD-
NC
NC
NC
2-40
E P I C - Q M 7 7
OUT
GND
IN
OUT
IN
IN
Signal Type
IN
IN
OUT
OUT
GND
IN
OUT
IN
IN/PWR
Signal Type
OUT
OUT
IN
IN
Signal Level
Signal Level