Tag: programming

I mentioned last week that I am working on what I believe is the first truly advanced non-platform-specific book on PLC Programming. My friend Tony over on Factory Automation Software Blog has reviewed some books that come the closest, but …

Request for PLC Information and Samples Read More »

Share
Tagged with: , , , , , , , , , , , , , , , ,

In last weeks’ post, I discussed acquiring data using a PLC to capture values from an analog card. I showed some fairly straightforward methods of capturing data using FIFO methods, averaging data values, and how some of the ladder logic …

Ladder Logic 402: Data Manipulation and Filtering Read More »

Share
Tagged with: , , , , , , ,

Todays post is in response to a request by Quy Phan, who I met a couple of weeks ago while teaching for Automation Training in San Diego. He is having some problems with some existing equipment concerning noise on his …

Ladder Logic 401: Data Acquisition and Analysis Read More »

Share
Tagged with: , , , , ,

In my last post on PLC Memory Organization, I mentioned that I had not really covered how scanning actually works in a programmable controller. This is certainly a topic that needs to be discussed for an understanding of PLC programming, …

Ladder Logic 105: PLC Scanning Read More »

Share
Tagged with: , , , , , , , ,

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 …

Ladder Logic 104: Memory Organization Read More »

Share
Tagged with: , , , , , , ,

I would like to make myself available to any company or group, worldwide, that desires truly advanced training in industrial automation-related fields.

Share
Tagged with: , , , ,

Today’s post is in response to Dave Tompkins, who posted a request for help last week for an application. Since he posted it on one of my series posts on ladder logic (204: Auto Sequences) I decided to frame it …

Ladder Logic 304: Timer Application Read More »

Share
Tagged with: , , ,

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 »

Share
Tagged with: , , , , , , , ,

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 »

Share
Tagged with: , , , , , ,

Hello again from Miami. This time I drove down here since I needed to spend a couple of weeks on my current project, upgrading a juice and beverage compounding system. When I’m out of town for a long time its …

Random Thoughts 1 Read More »

Share
Tagged with: , , , , , , ,