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I am working with a unitronics vision 570 PLC. I am doing a burn upload project and then when I try to verify , there are two cross marks in verification. These crosses are against PLC DLU memory backup. Sp any suggestions on how to fix that?


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I haven't run across this before, but as a general rule when I have issues with downloading I do the following:

- Confirm the version of VisiLogic that you are using matches what version was originally used to download the project.

- After making sure you have a saved version of the project, download a BLANK project to the PLC.

- Download your original project again.

- Now try Burn Upload Project again.

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