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What’s The Difference Between Analog And Digital Sensors?

Sensors are the eyes and ears of your robot or Programmable Logic Controller. They allow your controller to determine the state of objects in and the environment around your automated operations. There are many differences between the wide variety of sensors on the market. You can buy sensors that are inductive, magnetic, photoelectric, or ultrasonic. […]

NO and NC (Normally Open and Normally Closed) Proximity Sensor Basics

When I was learning PLC programming, I remember scratching my head about some of the concepts surrounding proximity sensors. Digital or analog, Normally Open (NO or N.O.), or Normally Closed (NC or N.C.)?  What exactly does it mean for a sensor to be NO or NC? What effect will it have when I’m checking the […]

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