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[Archie]

Try setting your PollRateOverride on every driver instance to 10000 just to see if it begins to have any effect.

I don't have access to a SLC/Micro with a serial connection right now, so I won't be able to test this until next week.

[eci]

I just tested it and it still runs at 100% once you get 4 to 5 of the forms open. It jumps up in percentage significantly when each form is opened.

[Godra]

Do you actually get readings on every form that you open?

[eci]

Yes, everything works as expected in the HMI.  I have 3 ovens hooked up to the PLC and am able to control them as I want.  All other forms are reading correctly from the PLC.

The only reason I noticed that the CPU in my computer was being over-worked is because the pilot lights started to change color from the top to the bottom slowly enough to easily see.

[Godra]

It appears as if everything on your end is working properly in "small amounts".

Out of curiosity, what is the actual baud rate of your communication?

[eci]

RSLinx auto-configures it to 19200.  I am not too familiar with serial connections though and do not know what the limiting factor is for baud rates are.

[Godra]

According to some websites, the max baud rate for your PLC is 19200 (which these days is considered slow).

If you do read the topic I mentioned in one of my previous posts then you will see what AabeckControls did in his project to improve the performance (the same changes made to the driver might not be possible in your case unless Archie comes with some solution but shuffling things on your forms might help).

Maybe, if your project had only 3 forms then it could possibly be working OK.

[Archie]

The problem was narrowed down to a driver problem with the SLCMicro drivers. This will be fixed in an updated that will be availbale in the next couple days.

[Archie]

Version 3.99n is now available that fixes this problem causing high CPU usage.

[eci]

That seems to have fixed the problem.

Thank you!