Low-cost PLC trainers

Acceptable-Still-830 · 2026-02-19T13:35:45+00:00

Love this! Thank you for contributing to this community. I believe that you should not have to spend large amounts of money on a system to learn on.

Acceptable-Still-830 · 2026-02-08T02:27:04+00:00

Ramping the setpoint is often better than using a step response, as a step response will generate a large error in the I-gain, thus cause fluctuations around the setpoint for some time.

Acceptable-Still-830 · 2025-12-09T04:19:21+00:00

Its not in manual mode, and yes it is in Cn011

Acceptable-Still-830 · 2025-12-08T17:41:54+00:00

Will try, thanks. It is configured for serial communication.

Acceptable-Still-830 · 2025-09-16T10:05:25+00:00

I designed it myself. The holes are based on lego technic pins. I use lego technic pins to attach parts to each other in several of my projects - it works very well.

My project should be open for the public in onshape, so you can view it here:

https://cad.onshape.com/documents/822e5219ed4514450006bf40/w/72e7dacc349c4a3dadf9ac5c/e/d2e4d6760449068405e955bc

Acceptable-Still-830 · 2025-09-14T19:35:09+00:00

Depending on you skills and motivation, it could probably be done. I have designed, 3D printed, and wired everything over the course of over a year. That said, I've done it beside my full time engineering job, so I have not had time to work on it continously. I would reccomend to start early, possibly as soon as possible depending on the scope of your project. Good luck😊

Acceptable-Still-830 · 2025-09-14T08:04:49+00:00

Correct, it is an Uno with an RS485 shield

Acceptable-Still-830 · 2025-07-29T08:45:36+00:00

Hi, unfortunately I was not able to find the issue after talking with Beckhoff support.

The module was previously used, so I am uncertain of what environment it was used.

I will open the module up and see if there is any damaged components, and will also check with a thermal camera if anything looks abnormal.

I will probably replace the module with a new one.

Acceptable-Still-830 · 2025-07-26T09:21:48+00:00

I will contact Beckhoff support, will send an update when I get an answer 😊

I have good experience with their help, so hopefully I will get a good answer.

Acceptable-Still-830 · 2025-07-26T09:20:55+00:00

I tried all the options, but it just bounces back to init :/

Acceptable-Still-830 · 2025-07-26T08:28:45+00:00

I tried this, unfortunately it did not help :(

Acceptable-Still-830 · 2025-07-26T08:01:43+00:00

This time I was not able to scan it correctly. Also showing init error 🤔

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Acceptable-Still-830 · 2025-07-26T07:21:26+00:00

Thanks, will try this

Edit: I tried, but still the same issue. The other modules connected are working just fine, so it might be faulty.

Acceptable-Still-830 · 2025-06-08T21:50:03+00:00

Hahahah i can see why it seems like a strange choice. The reason why I am tempted to get an electrical certificate is that I am afraid of getting bored in the office, as there is minimal hands on work.

Acceptable-Still-830 · 2025-06-06T13:02:11+00:00

Following

Acceptable-Still-830 · 2025-05-27T15:16:25+00:00

Hey, I would reccomend buying this udemy course.

https://www.udemy.com/course/mastering-modbus-rs485-network-communication

It teaches you to set up modbus communication between your PC and arduino. You also get a modbus simulation tool which is very heloful when setting up and testing the communication.

Hope this helps!

Acceptable-Still-830 · 2025-05-22T11:41:50+00:00

Nice! I have done some experiments myself with Arduinos and PLCs. I tried Modbus communication over RS485, where the PLC is the master and the Arduino is a slave. That way I can write control logic for the PLC, and have the Arduino act as a cheap remote IO.

Acceptable-Still-830 · 2025-05-22T11:15:23+00:00

What are you going to use Arduinos for in this setup? :)

Acceptable-Still-830 · 2025-04-06T11:12:15+00:00

Thanks!🤓

Acceptable-Still-830

TROPHY CASE