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PLC and HMI

More often than not industrial processes are controlled by PLC’s whilst HMI’s are becoming the frontline interface of modern systems.

PLC’s developed out of the need to improve efficiency in relay based control systems. Prior to PLC’s, relays were the main control devices within panels and cabinets. They were hard wired and any system changes resulted in down time as relays had to be tediously re-configured.

Today we are far removed from this, PLC’s are the main part of control systems worldwide. They integrate with field devices, perform motion control functions and can either be used for stand-alone single machine functions or part of a larger distributed control system within a facility. Modern PLC’s are extremely robust and versatile, all the major brands invest heavily in continued development of their range’s, adding more functionality, speed and processing power, together with add-ons such as expanded I/O and control module options.

HMI's present system data to the operator, give visuals of the industrial operation and link to SCADA systems and databases to provide key diagnostic data such as, trending, scheduled maintenance and real time visibility of the system. Within in this hub you can view and post all things PLC and HMI.

 

Sponsored by Siemens

article
HeikoL

PLC and HMI

November 12, 2016 11:19

Time is running out for Siemens LOGO! 6 logic controllers - LOGO! 8 is the future

Siemens has declared LOGO! 6 as a phase-out product with the effect of October 2016.

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article
HeikoL

PLC and HMI

August 23, 2018 14:19

Learn how Siemens LOGO! 8 helps to regulate the pressure of a cooling water system

This article explains how Siemens LOGO! 8 helps to regulate the pressure of a cooling water system. The article includes the LOGO! code and the BoM of the used parts.

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PLC and HMI

October 16, 2018 08:19

PCWorx Engineer software for the Phoenix Contact 2152 starterkit

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PLC and HMI

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PLC and HMI

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PLC and HMI

August 23, 2018 14:19

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PLC and HMI

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Stepwise approach to upgrading your automation control system

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