PLC interview questions |PLC basics |PLC Scan time | function of watchdog timer

PLC is also called Programmable Logic Controller.
PLC plays very important key role in the industries for automation of process & simplifies the operation.
PLCs operates on instructions that are stored in a memory module, which can include both program instructions and data. It takes input from sensors and performs logical operations on that data to produce the desired output.
Enhancing knowledge in PLC is very essential for automation & instrumentation engineers.
In this video, it is mentioned the few important interview questions related to plc about what is PLC Scan time & function of watchdog timer & different inputs & outputs used at plc & requirement of power supply unit at plc & programming languages uses in plc & why 4-20ma used instead of 0-20ma,plc signals from field.
This video is help ful for instrumentation technicians & instrumentation engineers & all others working in electrical field & industrial automation, industrial instrumentation, process instrumentation, plc automation & Electrical & electronics & automation fields & freshers preparing for interview.
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Interview questions & answers of plc
• PLC interview question...
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