Mechanical and electrical hardware
It’s been a while since I’ve added to the Ladder Logic series, so this post serves several purposes. It serves as the 7th video in the ControlLogix Odyssey series, it will be posted on YouTube as an ad, and it …
Ladder Logic 309: Allen-Bradley DDE/OPC Link to Excel Read more »
Lately I have seen a lot of posts promoting Structured Text on forums and Linked In. Structured Text is one of the 5 (or 6) standard PLC languages described in IEC 61131-3. While I have used ST in the past …
Two days before the tornado in March, I wrote a post about the enclosures I planned to market as part of my PLC training kit. With all of the turmoil and working out of my house for a few months, …
Today’s post doubles as a Ladder Logic series post and an introduction to the last videos in the Siemens Step 7 Odyssey series on my YouTube channel. Last week I covered a bit about how a Variable Frequency Drive interfaces …
Over the past few days I have received a lot of questions about drive or VFD (Variable Frequency Drive) control using a PLC, especially in my Facebook group. It can be very difficult to answer complex questions on Facebook, especially …
Typically I don’t do unsolicited free advertisements for companies or websites, but I really need to make an exception here for Advanced HMI. Advanced HMI provides a FREE open source HMI platform that runs on a PC. While they do …
Today’s post is a guest post by SensComp, a manufacturer of ultrasonic sensors. They also provided this cool infographic: Which Is Better? Comparing Piezoelectric, Electrostatic, And Electromagnetic Devices For your electronic sensor application, selecting the right equipment matters. Do you …
Piezoelectric, Electromagnetic, and Electrostatic Devices: A Comparison Read more »
As I’ve mentioned in my last few posts, I’ve been creating a lot of videos lately, and have been working on various online courses. The picture above is a Camtasia (the software I use for video editing) screen shot of …
Today’s post is a continuation on Jason Lafever’s questions on PLC to PLC communications. PLCs often have a need to send messages to each other, and all have some method of directly sending a message to read or write tags …
Ladder Logic 309: Allen-Bradley Produced-Consumed Tags (Video) Read more »
Today’s video is in response to a post I put on my Facebook automation forum, Automation Training. Jason Lafever asked if I would cover a bit on Allen-Bradley’s MSG (Message) Instruction, and cover Produced-Consumed Tags. I decided to split these …
Ladder Logic 308: Allen-Bradley’s MSG (Message) Instruction – Video Read more »
