plc

Checklist to Carry out PLC Preventive Maintenance Activity

A preventive maintenance checklist is a group of tasks that the technician must complete to close a preventive maintenance work order. The purpose of a preventive maintenance checklist is to confirm for maintenance tasks are correctly done. The maintenance schedule of Programmable Logic Controllers depends upon the environment of the controllers. Frequent maintenance of the …

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PLC 8

What are the types of PLC?

PLC: A PLC, or programmable logic controller, is a rugged computer used in industrial automation. These controllers have the ability to automate a particular procedure, a machine feature, or even an entire manufacturing line. How does a PLC function? The PLC collects data from attached sensors or input devices, processes the information, and then initiates …

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Siemens PLC System Overview

Introduction  SIMATIC is a series of programmable logic controllers and automation systems developed by Siemens introduced in 1958 the series has gone through four major generations. The latest beginning with the SIMATIC S7 generation. It is purely for industrial automation, process industry, and production. What are the various types of PLC? LOGO SIMATIC S7- 200 …

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Leading PLC manufacturers

A PLC can be described as an industrial computer and a PLC is composed of hardware and software and also a set of instructions to do the control functions. By using a PLC, we can control a machine or a process in an industry, the industrial process and machinery will be sequential. This sequential process …

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Simple motor operation using PLC

  PLC  Ladder motor  Problem: Controlling the running state of the 1 ph motor by PLC ; pressing START and STOP pushbuttons i.e. motor should remain in ON state after START pushbutton is pressed and should OFF when STOP pushbutton is pressed. Checking if the Motor is running normally by pressing TEST pushbutton.   Number of PLC …

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Data Handling Instructions for PLC

Introduction This session contains general information about the data handling instructions for plc and explains how they function in your application program. Convert to BCD (TOD) Use this instruction to convert 16-bit integers into BCD values. If the integer value you enter is negative, the absolute value of the number is used for conversion.   …

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