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Author Topic: ReadUDT Size  (Read 6340 times)

bachphi

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Re: ReadUDT Size
« Reply #15 on: December 02, 2023, 08:51:30 PM »
LOL, you realized it's for Codesys PLC, not Rockwell source.

I would trust this guy Ron Beaufort: https://www.plctalk.net/qanda/showthread.php?t=59105

Plus, a string contains ASCII code from 0-255., make more sense than -128-127.
« Last Edit: December 02, 2023, 08:53:30 PM by bachphi »
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Godra

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Re: ReadUDT Size
« Reply #16 on: December 02, 2023, 08:58:28 PM »
Here is another link that states the same as what I posted previously:

   https://docs.inmation.com/system/1.94/datasource-interfaces/plc-datasource/ablogix5000.html
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Godra

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Re: ReadUDT Size
« Reply #17 on: December 02, 2023, 09:01:41 PM »
Maybe Archie could pitch in his knowledge of SINT type.
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Kramrellim

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Re: ReadUDT Size
« Reply #18 on: December 03, 2023, 10:05:50 AM »
Thanks guys for the help.
It looks like it use the array size as Godra suggested.
today I'll see if I can read the complete UDT.
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Kramrellim

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Re: ReadUDT Size
« Reply #19 on: December 04, 2023, 08:15:26 AM »
Guys,
Thanks for your help. I got everything working that I need to have working.
I can poll all the data I need from one UDT in 30msec. I poll every 300msec with a Timer.

Thanks again.
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bachphi

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Re: ReadUDT Size
« Reply #20 on: December 04, 2023, 10:44:54 AM »
Have you checked the actual string?
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