User Manual

Chapter 3 Specifications
3-11
RS-422
RS-485
Pin Arrangement Pin No.
RS-422
Signal Name Direction Description
1 RDA Input Receive Data A(+)
2 RDB Input Receive Data B(-)
3 SDA Output Send Data A(+)
4 ERA Output Data Terminal Ready A(+)
5SG
- Signal Ground
6 CSB Input Clear to Send B(-)
7 SDB Output Send Data B(-)
8 CSA Input Clear to Send A(+)
9 ERB Output Data Terminal Ready B(-)
Shell FG
-
Frame Ground
(Common with SG)
Pin Arrangement Pin No.
RS-485
Signal Name Direction Description
1 DATA+ Input/Output Send/Receive Data (+)
2 DATA- Input/Output Send/Receive Data (+)
3NC
- No Connection
4NC
- No Connection
5SG
- Signal Ground
6NC
- No Connection
7NC
- No Connection
8NC
- No Connection
9NC
- No Connection
Shell FG
-
Frame Ground
(Common with SG)
(PL unit sid e)
9
6
5
1
(PL unit sid e)
9
6
5
1