Mitsubishi Electric MELSEC-F FX3G Series User Manual page 149

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
3. Instructions for using
• Mixed use of sink/source inputs
It is possible to set all input terminals (X) of the main unit to either sink input or source input mode.
However, a mixture of sink and source input terminals cannot be set within a single unit.
- It is possible to set sink or source input mode for main units and powered input/output extension units.
- The input mode of input/output extension blocks is determined based upon the selection of the sink or
source input mode of the main unit or powered extension unit (power source).
• Cautions when selecting a model
Sink/source input type and sink input type only unit models are both available. Select the proper type for
the application.
Differences from FX
Sink input type only FX
(manuals in English are supplied) have different model names.
• For sink input type only FX
in FX PLCs.
3G
When replacing a sink input type only FX
terminals, and use the [0V] terminal of the FX
• Sink/source input type FX
same way as FX
PLCs in input specifications (reference)
1N
PLCs (manuals in Japanese are supplied) and sink/source input type FX
1N
PLCs, the S/S terminal and the 24V terminal are connected internally, unlike
1N
1N
PLCs are configured in sink or source input mode using external wiring in the
1N
PLCs.
3G
PLC with a FX PLC, short-circuit the [S/S] and [24V]
3G
as the [COM] terminal of the FX
3G
10 Input Wiring Procedures
10.1 Before Starting Input Wiring
PLCs
1N
for wiring.
1N
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