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Does OS Update Delete Ladder Programme?


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  • MVP 2023

Don't do anything yet.  The best solution is to simply use the version of U90 that doesn't want to update the OS.  But I don't have the knowledge as to what version that is.  Someone else is  sure to know. 

Once you have that successfully in place, you should try to get the program out of the plc.

cheers, Aus

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  • MVP 2023

No-one has chimed in yet, so you have a choice.

1).  In theory the program is totally unaffected by the OS update and you can do it ok.

2).  Contact support@unitronics.com, ask them the question and they should know and give you a link to the correct U90 version.

I'd be inclined to wait the little bit longer and do no. 2.  If something does go astray for some reason during the update, you're covered.

cheers, Aus

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