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A programmable logic controller (PLC) is a digital computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or lighting fixtures. Unlike general-purpose computers, the PLC is designed specificly for multiple inputs and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. Programs to control machine operation are typically stored in battery-backed or non-volatile memory.

The PLC was invented in response to the needs of the American automotive manufacturing industry. It was initially adopted to replace the re-wiring of hard-wired control panels with software revision when production models changed. The functionality of the PLC has evolved over the years to include sequential relay control, motion control, process control, distributed control systems and networking. The main difference from other computers is that PLCs are armored for severe conditions (such as dust, moisture, heat, cold) and have the facility for extensive input/output (I/O) arrangements.

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Brass Fittings and Parts india
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Business Industrial Network
Some of our management, electrical and mechanical related training material offered are Ebooks, pocket guides, Palm Software, PLC programming examples, power points, CDs and CBTs (Computer Based...
JPT Mechanical Drives
Radicon Gearboxes, Siemens Gearboxes, Siemens Flender, Flender Gearboxes, Simogear, Drives, Motors, Electric Motors, Radicon Couplings, Geared Motor, Gear unit, Geared reducer, Reducer gearbox,...
Orion Technical Training
Courses:Basic PLCs (Allen Bradley SLC500 / RSLogix 500) Understanding PLCs (Allen Bradley SLC500 / RSLogix 500) Advanced PLCs (Allen Bradley SLC500 / RSLogix 500) ControlLogix (Allen Bradley 1756...
 
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