Tag: Siemens

Ladder Logic 104: Memory Organization

One of the first decisions that needs to be made when designing a PLC system is memory allocation and organization. In the early years of the PLC memory came at a premium… 1K (one kilobyte) of memory for the program

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Non-Native Devices: .eds and .gsd files

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

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Posted in Integration, PLCs, Software & Programming, Vendors and Manufacturers Tagged with: , , , , , , , ,

Industrial Ethernet

Today’s post is dedicated to my new friends at Poseidon Industries, a manufacturer of stone cutting and processing equipment, located in Punta Gorda, Florida. Last week I did some software work there and had some discussions on industrial Ethernet protocols

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PLC Articles – Software and Hardware

Since I started this blog in early 2011 I have written a lot of articles on PLCs. The PLC is a major part of many industrial facilities and machines, and indeed has been an important part of my career. Now

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A Service Application – Bottle Blower

Usually my work involves designing and building new equipment, or occasionally completely rebuilding and upgrading old machines. Last week I got an emergency call from an existing customer that their production line was down and they couldn’t get help quickly

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Automation Direct (Koyo) PLCs

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

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Siemens PLCs

Continuing the series I began last week with the Allen-Bradley PLC platform, this week I am discussing the Siemens family. My first exposure to Siemens PLCs was in the late 1990s when I customer wanted a quote on upgrading their

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Ladder Logic 207: Interrupts and Periodic Tasks

Today’s post is in response to Darko’s comment on my Ladder Logic 206: Scanning post. He mentioned that readers might want to learn a little bit about interrupts. It can be difficult to discuss this subject generically since different manufacturers

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Motor Control Design

Today’s topic is in response to Saravanan who posted a request last week on my “Panel Layout and Electrical Design” post of about a year ago. He asked “Thanks for the post. I want to learn about designing control circuits

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Posted in Controls Design, Motors and Actuators Tagged with: , , , , , , ,

PLC Manufacturer Rankings

After spending the last couple of weeks teaching PLC programming, I decided to do a little research on the popularity of the different manufacturer’s platforms worldwide. I have been asked many times in the past who the biggest, most popular,

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