PLC Or Progammable Logic Control is Central Processing Unit of the electronics for controlling a process carried out in the machine. PLC has a memory that serves as the custodian of the data used for the instruction of a process to give an order that had set the controls set on / off, sequence, arithmetic, timer, data handling and counter.
PLC Or Progammable PLC Logic Control born or first came out in 1969, which is controlled by a relay system includes Programmable Logic Controller (PLC) divide in more classes :
- Classes Small PLC Or Progammable PLC Logic Control
- Classes medium PLC Or Progammable PLC Logic Contro
- Classes high PLC Or Progammable PLC Logic Control
Device type in module, Power Supply Module, Processor Module, IO Module, Network Module
Basic foundation to understand PLC
Logic Gates or Logic Circuit or Digital Gates: AND, OR, NOT, NAND(NOT-AND), NOR(NOT-OR), XOR(OR-EXCLUSIVE), XNOR(NOR-EXCLUSIVE), And Combination Digital Logic Number Of Digital System: Decimal, Biner, Octal, And Hexadesimal. Information System(IT) must master the language of the machine, for interfacing man with machine Basic Control System design a machine to control the process of data Local Control Unit create a data system for the level controlled by the machine P&ID Diagram Must be able to read circuit diagram engine control instrument SCADA
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