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PLC

​What is a PLC?

What is a PLC? A PLC, or Programmable Logic Controller, is a computer built to function reliably under the tough conditions of industrial environments like extreme temperatures or dusty areas. It automates processes in industries, including manufacturing and wastewater treatment.

PLCs share many features of the personal computer you have at home. They both have a power supply, a CPU (Central Processing Unit), inputs and outputs (I/O), memory, and operating software (although it’s a different operating software).

The biggest differences are that a PLC can perform discrete and continuous functions that a PC cannot do, and a PLC is much better suited to rough industrial environments. A PLC can be thought of as a ‘ruggedized’ digital computer that manages the electromechanical processes of an industrial environment.

PLCs play a crucial role in the automation field, forming part of a larger SCADA system. A PLC can be programmed according to the operational requirements of the process. In the manufacturing industry, reprogramming will be needed due to the change in the nature of production. To overcome this difficulty, PLC-based control systems were introduced. We’ll first discuss PLC basics before looking at the various applications of PLCs.

If you want to learn how to programme PLCs, you should check out some of the different online PLC training courses. These courses can help jump-start your career in control engineering.

York is a cathedral city in North Yorkshire, England, with Roman origins, sited at the confluence of the rivers Ouse and Foss. The city has many historic buildings and other structures, such as a minster, castle, and city walls. It is the largest settlement and the administrative centre of the wider City of York district. It is located 27 miles (43 km) north-east of Leeds, 90 miles (140 km) south of Newcastle upon Tyne and 207 miles (333 km) north of London. York's built-up area had a recorded population of 141,685 in 2021.[1]

The city was founded under the name of Eboracum in 71 AD. It then became the capital of the Roman province of Britannia Inferior, and later of the kingdoms of Deira, Northumbria, and Scandinavian York. In the Middle Ages, it became the northern England ecclesiastical province's centre, and grew as a wool-trading centre.[2] In the 19th century, it became a major railway network hub and confectionery manufacturing centre. In the Second World War, part of the Baedeker Blitz bombed the city. Although York was less targeted during the war than other, more industrialised northern cities, several historic buildings were gutted and restoration took place up until the 1960s.[3]

Historic local governance of the city was as a county corporate, not included in the county's riding system. The city has since been locally governed as a municipal borough, county borough, and since 1996, a non-metropolitan district (the City of York), which also includes surrounding villages and rural areas, and the town of Haxby. The current district's local council, City of York Council, is responsible for providing all local services and facilities throughout this area.

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