RS-422 1 / 2 / 3 / 4 / 5 Terminal Pin Arrangement
1
8
DC IN 12V Terminal Pin Arrangement
Pin number
1
RX–
2
RX+
3
TX–
4
GND
5
GND
6
TX+
7
NC
8
NC
Connect the GNDs on both ends to stabilize the voltage level of the signal.
Pin number
1
GND
2
Not connected
3
Not connected
4
+12V
88
Function
Input (–)
Input (+)
Output (–)
–
–
Output (+)
–
–
Function