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Industrial Automation Is Seeing Modular Application Software GrowIndustrial Automation Is Seeing Modular Application Software Grow

Al Presher

September 1, 2015

4 Min Read
Industrial Automation Is Seeing Modular Application Software Grow

Transitions in automation control programming over the years from relay ladder logic, to PLC ladder logic, to even today's use of IEC 61131-3 PLC languages have maintained a fundamental connection with ladder logic programming and the use of graphical circuit diagrams from its relay logic roots.

Even with modern programming methods taking center stage, ladder diagram (LD) still has its place as one of the six IEC 61131-3 programming languages. LD has a significant user base, especially among plant service and support personnel who understand how ladder technology works and how to use its tools to troubleshoot sophisticated systems on the plant floor.


About the Author(s)

Al Presher

Al Presher is a contributing editor for Design News, specializing in automation and control and writing on automation topics, machine control, robotics, fluid power, and power transmission since 2002. Previously he worked in the electronic motion control field for 18 years, most recently as VP of Marketing for ORMEC Systems Corp (manufacturer of PC-based servo control systems).  Previously, he worked as Editor for Plant Systems and Equipment and Appliance magazines.  He holds an MA in magazine journalism from the S.I. Newhouse School of Public Communications at Syracuse University.

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