PLC Basics that Confuse Beginners: Digital vs Analog Inputs in PLC
Автор: Engineering Simplified
Загружено: 2026-01-02
Просмотров: 146
Not all PLC inputs are the same.
Digital inputs have only two states — ON or OFF.
Examples include push buttons, limit switches, and proximity sensors.
Analog inputs are different.
They measure continuous values like temperature, pressure, level, or speed.
Common analog signals include zero to ten volts or four to twenty milliamps.
Digital tells the PLC if something happened.
Analog tells the PLC how much.
Knowing the difference is critical in control systems
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