10
5.2
JM2 pin definitions
+Ve*
1
Plug
Socket
IO_0
2
IO_1
3
IO_2
4
IO_3
5
IO_4
6
IO_5
7
IO_6
8
IO_7
9
GND
10
5.3
JM3 pin definitions
RS422
Plug
Socket
RS485
TXD+ 1
1
TXD- 2
2
RXD+ 3
3
D+
RXD- 4
4
D-
EXTG 5
5 EXTG
5.4
JM4 pin definitions
PIN NO.
Plug
Socket
24V
V+
24V
GND
V-
GND
Note:
Always connect the EXTG between the communication devices for RS422 or RS485, do not
let the signal floating to improve noise immunity.
* +Ve can floating or voltage input (voltage range +3.3V ~ +24V)
* +Ve can apply different voltage as you need.
