The PNP sensor is a type of sensor that detects (load externally wired to negative terminal) The sensor (-) wire is connected directly to the PLC input.
NPN (non-polarized) sensor (load externally wired to positive terminal) The sensor (+) wire is connected directly to the PLC input. Configurations with three wires. PNP is a type of sensor. The sensor output cable is connected directly to the PLC input. NPN is a type of sensor.
Metallic items are detected using inductive sensors, while all other materials are detected by capacitive sensors. The detection ranges of ultrasonic proximity sensors are exceptionally long.
The host can establish measurement settings and request results via normal I2C connection with the microcontroller. Programmable thresholds allow the VCNL4100 to interrupt the host if certain threshold values are exceeded, reducing device polling.
A 3-wire inductive proximity sensor is an electronic device that can detect ferrous (Fe) targets without having to touch them. It activates an internal electronic switch when it recognises that target. The sensor requires a DC power source because it is an electrical device.
The active HIGH output is provided by PNP proximity sensors. When an object reaches the sensor's detection range, the sensor's output is linked to +24V. It identifies this as a logic HIGH signal when linked to a PLC input. 'Sourcing' sensors are also known as PNP proximity sensors.
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