E-11
(RS-422)
Pin No.
Signal
Signal Name
Direction
1
RXA
Receive Data (+)
Input
2
RXB
Receive Data (-)
Input
3
TXA
Send Data (+)
Output
4
NC
No Connection
-
5
GND
Ground
-
6
NC
No Connection
-
7
TXB
Send Data (-)
Output
8
NC
No Connection
-
9
NC
No Connection
-
FG
FG
Frame Ground
-
(RS-485)
Pin No.
Signal
Signal Name
Direction
1
DATE+
Send/Receive Data (+)
In/Output
2
DATE-
Send/Receive Data (-)
In/Output
3
NC
No Connection
-
4
NC
No Connection
-
5
GND
Ground
-
6
NC
No Connection
-
7
NC
No Connection
-
8
NC
No Connection
-
9
NC
No Connection
-
FG
FG
Frame Ground
-
• 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.
