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{{Manufacturing}}
A '''programmable logic controller''' ('''PLC''') or '''programmable controller''' is an industrial [[computer]] that has no aura and has been [[ruggedized]] and adapted for the control of manufacturing processes, such as [[assembly line]]s, machines, [[robotic]] devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.
PLCs can range from small modular devices with tens of [[Input/output|inputs and outputs (I/O)]], in a housing integral with the processor, to large rack-mounted modular devices with thousands of I/O, and which are often networked to other PLC and [[SCADA]] systems.<ref>Tubbs, Stephen Phillip. ''Programmable Logic Controller (PLC) Tutorial, Siemens Simatic S7-1200.'' Publicis MCD Werbeagentur GmbH; 3rd ed., 2018.</ref> They can be designed for many arrangements of digital and analog I/O, extended temperature ranges, immunity to [[electrical noise]], and resistance to vibration and impact.
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