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How do i make a push button work like a switch in PLC ?

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Question added by Khalil Haymour , Project Electrical Engineer , Al Mahmal Facilities Services
Date Posted: 2017/05/02
Ahmed Al Barwani
by Ahmed Al Barwani , Head of Instrument & Automation , Haya Water Company (Oman wastewater)

by applying latching principle 

ANOOP REVEENDRAN
by ANOOP REVEENDRAN , maintenance supervisor engineer , Tamas Projects LLC

Apply latching method in ladder program

Teja Penubadi
by Teja Penubadi , Senior Instrumentation Engineer , Deccan Fine Chemicals (India) Pvt Ltd

Use Set/Reset memory bit or Latch

Shaji Panikathu
by Shaji Panikathu , Automation Engineer , Occidental Petroleum Corporation ( OXY )

Make a XIC contact input, with a "OneShot" Latch Output IF XIC is closed.

And, IF Output is ON, on next pressof XIC, with a "OneShot" Unlatch it

Vikna varma
by Vikna varma , Dcs Engineer , excel automation solution

one have to use combination of rising and falling edge switches , memory register and also latching concept

wayeez ahmed
by wayeez ahmed , Project , ZADCO (ZAKUM Abu-Dhabi Oil and Gas Company)

In parallel to the push button take the feed back of output which is activated through this push button.

By using POS (+ve edge detection) along with SET and RESET coil!

md atiqur rahman
by md atiqur rahman , maintenance engineer , Gulf Precast concrete llc.

BY USING LADDER LOGIC DIAGRAM OR LATCHING METHOD 

Badr Eddine TERKI
by Badr Eddine TERKI , Senior Instrument Technician , Sonatrach

By applying latching method, i.e addding a sub rung to the main rung with an input variable that is labeled with the same label of the output so that once you click on the pushbutton you will activate the output, and because the output coil is activated the input holding the same output label will be also activated and so your output is still holding the state even your pushbutton is zctivated only once.

Aamir Hassan
by Aamir Hassan , Service Biomedical Engineer , Shifa International Hospital

By using contacts in PLC ladder logic 

Baitjhumedi Lawrence
by Baitjhumedi Lawrence , Instrument technician , SASOL

a ladder program will be used to make a latch contact

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