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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.
North Yorkshire is a ceremonial county in the Yorkshire and the Humber and North East regions of England. It borders County Durham to the north, the North Sea to the east, the East Riding of Yorkshire to the south-east, South Yorkshire to the south, West Yorkshire to the south-west, and Cumbria and Lancashire to the west. Northallerton is the county town.
The county is the largest in England by land area, at 8,654 km2 (3,480 sq mi), and had a population of 1,158,816 in 2021. The largest settlements are Middlesbrough (148,215) in the north-east and the city of York (141,685) in the south. Middlesbrough is part of the Teesside built-up area, which extends into County Durham and has a total population of 376,663 in 2011. The remainder of the county is rural, and the largest towns are Harrogate (75,515) and Scarborough (59,505). For local government purposes the county comprises four unitary authority areas — Middlesbrough, North Yorkshire, Redcar and Cleveland, and York — and part of a fifth, Stockton-on-Tees. The local authorities of York and North Yorkshire are part of a combined authority of the same name, and the local authorities of the other three areas are part of the Tees Valley combined authority. The county was historically part of Yorkshire.
The centre of the county contains a wide plain, called the Vale of Mowbray in the north and Vale of York in the south. The North York Moors uplands lie to the east, and south of them the Vale of Pickering is separated from the main plain by the Howardian Hills. The west of the county contains the Yorkshire Dales, an extensive upland area which contains the source of the River Ouse/Ure and many of its tributaries, which together drain most of the county before reaching the Humber estuary in the south. The Dales also contain the county's highest point, Whernside, at 2,415 feet (736 m).
