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MELSOFT
2 SYSTEM CONFIGURATIONS
6) Function expansion board for FXCPU
Series Function expansion board
FX3U, FX3UC FX3U-422-BD
FX3G FX3G-422-BD
FX2N FX2N-422-BD
FX1S,
FX1N FX1N-422-BD
If "Operate communication setting" is checked on the <<PLC system
(2)>> tab in the "FX Parameter" dialog box of GX Developer, the
corresponding port cannot be used for communication with the
programmable controller. In this case, write the setting, where the
above setting has been removed, from the built-in programming port of
the programmable controller.
When the CPU type of the project is the FX
3G or FX3U(C), the channel
specification (CH1/CH2) combo box is displayed.
Set to CH1 and check the settings.