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Programmable logic controller - Coggle Diagram
Programmable logic controller
Power supply
Provide electricity in either AC or DC form
CPU (Central Processing Unit)
Consists of a microprocessor, memory chip and other integrated circuits to control logic, monitoring and communications
Programming mode
It downloads a program from an external PC
run mode
It executes the program and operates the process
Input/Output section
Provides the physical connection between the external components and the PLC
Input
Give a signal that is either on or off
Output
digital
Turns a device on or off
Analogue
Converts the digital output from CPU in voltage or current
A specialised device for controlling machines and processes
there are many shapes and sizes: some are pocket-sized while others need large racks to hold their various parts
It is used in many industries from factory to oil refineries