Only one function expansion board is available for one FX 1S /FX 1N
FX1N-422-BD FX1N-422-BD FX1N-422-BD User's Guide PDF Series PLC main unit. Never stack up two or
more FX1N-422-BD PDF function expansion boards. (Even if they are stacked up, they do not function FX1N-422-BD User's Guide at all.)
FX1N-422-BD FX1N-422-BD PDF Mitsubishi Communication Board Manual PDF.
Mitsubishi FX1N-422-BD Manual PDF.
Mitsubishi PLC FX1N-422-BD User's Guide FX1N-422-BD Manual PDF.
Mitsubishi FX3G-422-BD PDF Manual Moduule.
FX2N-422-BD FX1N-422-BD User's Guide PDF Mitsubishi FX2N-422-BD User's Guide.