User guide

Quick Installation Guide
EPI-QM67 Quick Installation Guide 15
2.3.9 Serial port 1/ 2 connector (JCOM1/ JCOM2)
Signal
PIN
IN
Signal
NC
20
19
RI2
CTS2
18
17
RST2
DSR2
16
15
GND
DTR2
14
13
TXD2
RXD2
12
11
DCD2
NC
10
9
RI1
CTS1
8
7
RST1
DSR1
6
5
GND
DTR1
4
3
TXD1
RXD1
2
1
DCD1
2.3.10 Serial port 1/2 in RS-422/485 mode connector (J422/1)
Signal
PIN
PIN
Signal
GND
6
5
+5V
RX+
4
3
TX+
RX-
2
1
TX-
Note: J422/1 is available after
modifying the mode of COM2 in BIOS setting.
JCOM1/JCOM2