Proface APL3000B - Node Box PC User Manual
Page 30
Chapter 2 Specifications
2-9
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
NC
-
No Connection
5
GND
-
Signal Ground (SG)
6
NC
-
No Connection
7
SDB
Output
Send Data B (-)
8
NC
-
No Connection
9
NC
-
No Connection
Shell
FG
-
Frame Ground (Common with SG)
Pin No.
RS-485
Signal Name
Direction
Description
1
DATA +
Input / Output
Send/Receive Data (+)
2
DATA -
Input / Output
Send/Receive Data (-)
3
NC
-
No Connection
4
NC
-
No Connection
5
GND
-
Signal Ground (SG)
6
NC
-
No Connection
7
NC
-
No Connection
8
NC
-
No Connection
9
NC
-
No Connection
Shell
FG
-
Frame Ground (Common with SG)