Pro-face PS-A Series Installation Manual page 11

(RS-422)
Pin No. Signal
1 RXA
2 RXB
3 TXA
4 NC
5 GND
6 NC
7 TXB
8 NC
9 NC
FG FG
(RS-485)
Pin No. Signal
1 DATE+
2 DATE-
3 NC
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC
FG FG
• Be sure to connect pin number 5 (SG) of COM1 to the host unit's
Signal Ground terminal.
• Be sure to confirm what settings will be used by the other
device and set the dip switches accordingly. Failure to do so can
result in a unit malfunction or damage.
• Whenever changing the PS-A switches, be sure to first turn the
PS-A's power supply OFF. Failure to do so can cause a PS-A
malfunction.
• Connect the FG terminal line to the connector cover's PS-A con-
nector attachment screw.
• FG and SG terminals are internally connected in the PS-A. When
connecting to another device, be sure to create an SG shorting
loop in your system.
Use inch type (#4-40UNC) threads to hold the cable's set (attachment) screws
in place.
Signal Name
Receive Data (+)
Receive Data (-)
Send Data (+)
No Connection
Ground
No Connection
Send Data (-)
No Connection
No Connection
Frame Ground
Signal Name
Send/Receive Data (+)
Send/Receive Data (-)
No Connection
No Connection
Ground
No Connection
No Connection
No Connection
No Connection
Frame Ground
Direction
Input
Input
Output
-
-
-
Output
-
-
-
Direction
In/Output
In/Output
-
-
-
-
-
-
-
-
E-11