PLC

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PLC

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

PLC

(1) (Power Line Communications) See broadband over power lines.

(2) (Programmable Logic Controller) A programmable microprocessor-based device that is used in discrete manufacturing to control assembly lines and machinery on the shop floor as well as many other types of mechanical, electrical and electronic equipment in a plant. Typically RISC based and programmed in an IEC 61131 programming language, a PLC is designed for real-time use in rugged, industrial environments. Connected to sensors and actuators, PLCs are categorized by the number and type of I/O ports they provide and by their I/O scan rate.

In the late 1960s, PLCs were first used to replace the hardwired networks of relays and timers in automobile assembly lines, which were partially automated at that time. The programmability of the PLC enabled changes to be effected considerably faster. Contrast with PAC and DCS. See IEC 61131.
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References in periodicals archive ?
The company's twitter handle has been changed from Safaricom Limited @SafaricomLTD to Safaricom Public Limited Company @SafaricomPLC.
BY ORDER OF THE BOARD Dated the 21st day of December 2015 NOTE: Where any person wishes to be represented and/or vote by Proxy, the form of Proxy must be lodged at the Registered Office of the company Scredible Public Limited Company situated at Trinity House, Charleston Road, Ranelagh, Dublin 6 not later than 9am on 6th January 2016.
Vendor: MOL Hungarian Oil and Gas Public Limited Company
29 December 2011 - Norwegian regional bank SpareBank 1 SR-Bank ASA (OSL:ROGG) said on Wednesday that in connection with its conversion from an equity certificate bank into a public limited company (ASA), the last day of listing for the equity certificates will be 30 December.
On October 1, 1997, Northern Rock converted from a building society to a public limited company, listed on the London Stock Exchange and authorised under the Banking Act 1987.
In the case of the AIM, the listed entity will be a public limited company (PLC).
Britain's Jus-tin Wilson will today launch himself on the Stock Exchange as a public limited company as he attempts to raise the funds necessary to earn a Formula One drive.
Janana De Malucho Textile Mills Limited was incorporated in 1960 as a Public Limited Company by its founder Chairman, Late Lt.
The conversion to a public limited company signifies the launch of a new consistent strategic and economic alignment with which Siegwerk Druckfarben AG is starting off into what they hope will be a successful future.
Some foreign entities, such as a British public limited company, are per se corporations under the rules, and alternative treatment cannot be elected.
The list also includes an Indian public limited company. Under Indian law, a private limited company in some circumstances can be deemed to be a public company.
Atlas Battery Limited was incorporated as a public limited company on October 19, 1966.

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