The Counter Instruction Is Found On

question 61

Multiple Choice

The counter instruction is found on:

• A)all PLCs.
• B)small-size PLCs.
• C)medium-size PLCs.
• D)large-size PLCs.

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Definitions:

Direction of Rotation

This refers to the clockwise or counterclockwise rotation of a motor or mechanical system, which can typically be reversed in electric motors by altering the wiring configuration.

Machine Part

A machine part is a component or piece that has been specifically designed and manufactured to perform a particular function within a complex assembly in machinery.

Control Coil

An electromagnetic coil used in electrical circuits to magnetically control the operation of devices like relays or contactors.

Magnetic Forces

The attraction or repulsion that arises between electrically charged particles due to their motion, which is the basis for the operation of electrical motors and devices.