When designing a control system, sometimes it becomes necessary or advantageous to communicate with devices that were not made by the PLC manufacturer. If these devices need to be placed on an Ethernet, DeviceNet or Profibus network there are methods …

Non-Native Devices: .eds and .gsd files Read more »

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Today’s topic involves a project I have been working on over the last few months. The project consists of adding process equipment including tanks, pumps, valves and instrumentation to an existing system… while it is running. Because production runs 24 …

Ladder Logic 303: PLC Forensics Read more »

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Today’s post is another guest article, this one written by Steve Myres. Steve owns Automation Solutions, a controls integration company that also provides machine mechanical, electrical, and fluid power troubleshooting and design. ************************************************************ Dynamic addressing In this article, I’ll describe …

Dynamic (Indirect) Addressing Read more »

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This post is a continuation of a series I started a couple of weeks ago on PLC platforms. So far I have covered Allen-Bradley and Siemens, this week I am going to discuss the Automation Direct and Koyo platform. Koyo …

Automation Direct (Koyo) PLCs Read more »

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