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Author Topic: Reading array of UDT's  (Read 2055 times)

cmullis

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Reading array of UDT's
« on: November 25, 2015, 08:46:35 PM »
I have an array (10000) of UDT's. The udt has 4 DINT's and 1 string in the structure. What is the fastest way to read this type of structure? Using a For Loop will take about 18 minutes based on my calculations. I am trying to pull a bunch of data out of the PLC so that I can parse it and build some reports with it.
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Archie

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Re: Reading array of UDT's
« Reply #1 on: November 26, 2015, 07:01:51 AM »
Your best chance may be to use BeginReadMultiple to read each UDT element at a time. Even this will take 10,000 reads. Any way you go about it, reading almost 1Mb of data is going to take some time.
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bachphi

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Re: Reading array of UDT's
« Reply #2 on: November 26, 2015, 09:18:05 AM »
This is a strong case for storing it to a database.
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UCL =================
This is NOT alt.read.my.mind.No such thing is sh^t-for-brains
unless you are posting to alt.read.my.mind. Savvy?
My understanding of computer is well below six Σ.
Unless what I say is logically defined in a PLC, everything else might be beyond my control.
LCL ================
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