Chapter 2 Programming
2.3.2
Wiring the Digital Input Module
The input signal is the direct-current power input. Sinking and sourcing are current driving
capabilities of a circuit. They are defined as follows.
z
Sinking
z
Sourcing
2.3.3
Wiring the Digital Output Module
The output unit can be the relay output, the transistor output, or the TRIAC output.
Relay output
Transistor output
TRIAC output
2-9
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