2.2.5 GT21
24 V/RS232C type
Pin name
Name
Signal direction
Product No.
+
+24 V
-
AIGT2230B
AIGT2230H
−
0 V
-
FG
Functional ground
-
SD
Send data
GT
→
External device
RD
Receive data
GT
←
External device
RS
Request to send
GT
→
External device
CS
Clear to send
GT
←
External device
SG
Signal ground
-
24 V/RS422(RS485) type
Pin name
Name
Signal direction
Product No.
+
+24 V
-
AIGT2232B
AIGT2232H
−
0 V
-
FG
Functional ground
-
+SD
Send data
GT
→
External device(+)
−
SD
Send data
GT
→
External device(
−
)
+RD
Receive data
GT
←
External device(+)
−
RD
Receive data
GT
←
External device(
−
)
E
Terminal resistance
-
Note: There is no RS and CS (control lines).
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