Building Blocks of Industrial Automation
As with any field of study, industrial automation and system integration requires specific skills that need to be mastered to progress to the next stage of learning.
Tag: PLC programming
Ladder Logic 309: Allen-Bradley DDE/OPC Link to Excel
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 …
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The Case for Ladder Logic
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 …
Ladder Logic 404: VFD Encoder Control/Siemens
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 …
Ladder Logic 309: Allen-Bradley Produced-Consumed Tags (Video)
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 …
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Ladder Logic 308: Allen-Bradley’s MSG (Message) Instruction – Video
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 …
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Ladder Logic 307: Data Average and Archive
Today’s post is in response to Yusuf Shaikh, who asked a question in a Facebook forum on PLCs. He asked “How to calculate average of drive current tag for every 15 seconds in Micrologix 1400 PLC?“ Of course there are …
Teaching the Teachers
A few weeks ago I had the privilege of teaching a Siemens S7 advanced class for Automation Training to some of the professors in my old home town of Knoxville. They were from several of the area colleges and vo-tech …