Logic Concept:
Represents binary states Logic 1 (ON) or Logic 0 (OFF).
Digital I/O Devices:
- Also known as discrete I/O devices.
- Operate in two states: ON or OFF.
- Connected to digital I/O channels.
- PLC interprets ON as Logic 1 and OFF as Logic 0.
Analog I/O Devices:
PLCs sense and generate analog values.
- Internally, PLCs convert these analog values to binary signals (ON or OFF).
- Correspond to Logic 1 (ON) and Logic 0 (OFF).