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Author Topic: Checksum or hash of loaded ladder code on T1H-DM1E  (Read 2556 times)

eman5oh

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Checksum or hash of loaded ladder code on T1H-DM1E
« on: September 29, 2017, 09:39:31 PM »
Looking for a way to verify the proper code has been loaded to the plc, is there a way checksum or hash the loaded ladder code and read it with a connected c-more?
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BobO

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Re: Checksum or hash of loaded ladder code on T1H-DM1E
« Reply #1 on: September 29, 2017, 10:12:25 PM »
Quote from: eman5oh on September 29, 2017, 09:39:31 PM
Looking for a way to verify the proper code has been loaded to the plc, is there a way checksum or hash the loaded ladder code and read it with a connected c-more?

No, not currently.

DMLoader uses a retentive DST to verify the program. Program writes a value there during first scan.
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eman5oh

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Re: Checksum or hash of loaded ladder code on T1H-DM1E
« Reply #2 on: October 03, 2017, 02:22:04 PM »
What DST is stored?
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BobO

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Re: Checksum or hash of loaded ladder code on T1H-DM1E
« Reply #3 on: October 03, 2017, 02:25:46 PM »
We use DST387 and DST388 as the Product ID and Product Version with DMLoader. But if all you are doing is trying to verify the program, just write a known value to whatever location you wish to read from the HMI.
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