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FX3UC Series Programmable Controllers
User’s Manual - Hardware Edition
6 Output Specification and External Wiring
6.1 Sink and Source Output (Transistor)
6.1 Sink and Source Output (Transistor)
Transistor outputs in the FX3UC Series main unit and FX2N/FX2NC Series I/O extension blocks are classified
into sink output type or source output type.
1. Differences in circuit
• Sink output [-common]
Output to make load current flow into the output (Y) terminal is
called sink output.
• Source output [+common]
Output to make load current flow out of the output (Y) terminal is
called source output.
Load
Y
Fuse
DC
power
supply
COM
Load
Y
+V
DC
power
supply
Fuse
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