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Chapter 1 General
1-4
Terms Definition Remarks
Sink Input
Current flows from the switch to the PLC input terminal if a input signal turns on.
Source
Input
Current flows from the PLC input terminal to the switch after a input signal turns
on.
Sink Output
Current flows from the load to the output terminal and the PLC output turn on.
Source
Output
Current flows from the output terminal to the load and the PLC output turn on.
Output
Contact
Output Contact