NAiS GT Series Technical Manual page 84

Connecting the FX Series using an adapter (RS232C)
Connection method
CPU Adaptor
FX1N FX1N-232-BD
FX2N FX2N-232-BD
Be aware that communication will not be possible if the above adaptor cannot be connected to the FX
series.
Although No. 6 and 7 of the GT11 is RS/CS, they can be used in the above connection.
Setting the communication conditions for the PLC
"0" should be stored in D8120. ("0" is the default value, so this setting should not need to be entered by
the user.)
Communication condition settings and devices that can be used are the same as those given on
the previous page.
Note:
The RS422 type GT01 and FX series does not support the communication using the adapter for RS422
(or RS485).
4-24
Wiring diagram GT series
GT01, GT11
RS232C type