PLC courses Training That Improves Your Career
A programmable logic controller (PLC) or programmable controller is an industrial computer that has been durable and adapted to control production processes such as assembly lines. Burraq engineering solution provides free PLC Courses in Pakistan. Machines, robotic devices, or any activity that requires high reliability, easy programming, and diagnosis of process errors.
Plc invented
Dick Morley is considered the father of the PLC, as he invented the first PLC, the Modicon 084, for General Motors in 1968. PLCs can range from small modular devices with dozens of inputs and outputs in a processor-integrated case to large rack-mounted modular devices with thousands and which are often linked to other PLC and SCADA systems.
Non-volatile memory
They can be designed for many digital and analog layouts with extended temperature ranges, immunity to electrical noise, and immunity to vibration and shock. Programs for controlling machine operation are usually stored in battery-backed or non-volatile memory.
Automotive
PLCs were first developed in the automotive industry to provide flexible, robust and easily programmable controllers to replace hard-wired relay logic systems. Since then, they have been widely accepted as highly reliable automation controllers suitable for harsh environments.
Firm nature
The hard-wired nature made it difficult for designers to change the automation process. Changes would require new involvement and careful updating of the documentation. If even one wire was out of place, or one relay failed, the entire system would fail.
Often technicians
Technicians often spent hours troubleshooting by examining schematics and comparing them to existing wiring. When general-purpose computers became available, they were soon used to control logic in industrial processes. These early computers were like temperature, purity, and quality of power.
Several advantages
The PLC provided several advantages over earlier automation systems. It tolerated industrial environments better than computers and was more reliable, more compact, and required less maintenance than relay systems. It was easily expandable with additional modules, whereas relay systems required complex hardware changes in case of reconfiguration.
Programming language
This made it easier to repeat the design of the manufacturing process. With a simple programming language focused on logic and switching operations, it was more user-friendly than computers using general-purpose programming languages. It also enabled monitoring of its operation.
Ladder logic
Early PLCs were programmed in ladder logic that strongly resembled the schematic diagram of relay logic. This program enrollment was chosen to reduce training requirements for existing technicians. Other PLCs used a form of instruction list programming based on a stack-based logic solver.
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