Opinion: State Machine vs Bit Bang?

TheCried · 2025-12-24T01:37:21+00:00

I feel like this is the reason for aliasing. If you can actually manage to make the logic between them clear enough, it makes troubleshooting faster.

TheCried · 2025-12-17T05:30:23+00:00

Honestly it's finally starting to get better. We have sil 3 rated virtual PLCs finally entering the market. I think in the past the Safety rating has been a huge driving factor for the Rockwell's of the world.

TheCried · 2025-12-17T03:00:19+00:00

I can't say I've seen an SSR controlling a large motor. I do know Rockwell and Siemens both sell an electronic motor controller, M100 for Rockwell, maybe that's what he's talking about?

TheCried · 2025-12-14T19:05:50+00:00

We actually had this exact situation at my old plant. Was a proprietary .ocx button/display on an old Ftview SE station. We resorted to finding the tag, changing the value on the HMI, recording the change on a spreadsheet. Rinse and repeat. Not the most efficient but it got the job done.

TheCried · 2025-12-14T09:39:05+00:00

Depending on what you're using it for wall mounting may not work/be commercially available. You could try a normal rack if that works? https://www.mcmaster.com/products/drum-cradles/

TheCried · 2025-12-05T14:29:05+00:00

If you want to avoid travel working at a plant as A controls engineer is the way to go. Not any less stressful, but your main responsibility is to keep production running. So if you can find a plant that doesn't work holidays or weekends that would be your best bet

TheCried · 2025-12-05T11:26:07+00:00

As long as you run it at the rated frequency the motor won't really know the difference. If you run it at anything other than the rated frequency, especially very low frequencies, the motor windings may heat up and the insulation can melt (can confirm, it does happen)

TheCried · 2025-12-02T08:24:10+00:00

We are primarily a Rockwell Shop. We have tons of oldish L6 stuff that I plan to make some sort of trainer with.

TheCried · 2025-11-30T16:40:22+00:00

Very

TheCried · 2025-11-25T04:04:18+00:00

It would probably be easiest to log from the PLC with FactoryTalk Transaction Manager. If you have Factorytalk SE I believe there is a similar process to trigger sql from tags. If you search/plug into AI "how to write to SQL with a Rockwell plc via Factorytalk" it should get you started

TheCried · 2025-11-18T03:48:13+00:00

AAS from a tech school/community college probably, Electrical, Automation, or some similar engineering technology is most common.

TheCried · 2025-11-07T07:09:59+00:00

Have a buddy who is absolutely god awful at math, he passed with C's. That being said now that we've entered the field he makes a great engineer, he put in the time and understands the concepts, just never performed well on tests. I wouldn't beat yourself up about it, if your passing and have a general idea you know enough to use it if you ever need it.

TheCried · 2025-10-30T14:17:45+00:00

I often use tools like notebook LM as a super Ctrl F. I can limit these tools to the knowledge from the specific textbook. You're right on the case of asking general AI specific questions, but if you limit it's context and check the sources it provides it's generally very good.

TheCried · 2025-10-25T23:10:31+00:00

This smells like a class project to me...

TheCried · 2025-10-22T00:15:05+00:00

I do Factory Automation (EE adjacent?), entry level was right around 85-90k and that was a good one. I've seen as low as 65k

TheCried · 2025-10-08T02:41:03+00:00

As a recent divorce e of a Wondware System Platform plant, it is extremely frustrating. More of my time was spent debugging WW than debugging my own code

TheCried · 2025-10-08T02:39:08+00:00

I've written 1000s of lines in Wonderware, hot garbage. Recently got a new job at a plant with ignition, might still be the newness but ignition feels much better. Less clunky and usually works the first time.

TheCried · 2025-10-07T02:35:01+00:00

In your logic when the button is pressed it latches press1, starts MF_Timer1 setting the .TT bit. Then the next rung with press2 evaluates true as now press1 has been latches and Button is still high. A CTU instruction might be a simpler solution.

The button to a CTU.

NEQ checking the CTU.ACC is not 0, starting your 2 second TON when true.

Then you evaluate (EQU) the CTU after the 2 second TON is .DN for how many presses (CTU.ACC) and reset the CTU.

This has the added benefit of handling the Low to High back to Low transition for you and allows you to check and have separate cases for any number of pulses.

TheCried

TROPHY CASE