Ladder Logic 105 Scanning Solution
Last week I posted a fairly straightforward question at the end of my post on PLC Scanning. I then shared the post on Linked In as well as on my company’s Facebook page. One reason I share these posts on …
Tag: PLCs
Ladder Logic 105: PLC Scanning
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 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 …
Advanced PLC and Industrial Training
I would like to make myself available to any company or group, worldwide, that desires truly advanced training in industrial automation-related fields.
Fieldservers and Protocol Converters
Today’s topic derives from a project I have become involved in in my “spare” time. Lately I have been spending a lot more time teaching classes. My project in Miami is mostly complete, so I have been able to get …
History of the PLC (Automation Direct Link)
Automation Direct has written a new post on the history of the PLC that you might find interesting. It can be found HERE and covers the early years of PLC development. It mostly discusses Dick Morley and the founding of …
PLC Infographic / Udemy
Last week I received an e-mail from a guy at a company called Udemy. He had stumbled across a post about Automation Direct from about a year ago and thought I might be interested in the infographic above. Sometimes when …
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 …
Ladder Logic 303: PLC Forensics
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 …
Random Thoughts 1
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 …