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Programmable Logic Controllers, 6th Edition by William Bolton

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Chapter 2

Input/Output Devices

Abstract

This chapter is a brief consideration of typical input and output devices used with PLCs. The many devices considered include digital and analogue devices such as mechanical switches for position detection, proximity switches, photoelectric switches, encoders, temperature and pressure switches, potentiometers, linear variable differential transformers, strain gauges, thermistors, thermotransistors and thermocouples. Output devices considered include relays, contactors, solenoid valves and motors.

Keywords

Input and output devices

This chapter is a brief consideration of typical input and output devices used with PLCs. The input devices considered include digital and analog devices such as mechanical ...

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