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IEC 61131 Programmable Controllers. IEC 61131 is an IEC standard for programmable controllers.

IEC 61131 Programmable Controllers

It was known as IEC 1131 before the change in numbering system by IEC. Sections of IEC 61131[edit] Standard IEC 61131 is divided into several parts:[1] Part 1: General informationPart 2: Equipment requirements and testsPart 3: Programming languagesPart 4: User guidelinesPart 5: CommunicationsPart 6: Functional safetyPart 7: Fuzzy control programmingPart 8: Guidelines for the application and implementation of programming languages Related Standards[edit] Solid-state (electronics) In a solid-state component, the current is confined to solid elements and compounds engineered specifically to switch and amplify it. Current flow can be understood in two forms: as negatively charged electrons, and as positively charged electron deficiencies called holes. The first solid-state device was the "cat's whisker" detector, first used in 1930s radio receivers.

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