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How could this happen?


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  • 2 months later...

Unitronics  published a software update for Vision PLCs, which requires you to set an alphanumeric password to access PLC via PCOM protocol for online and programming mode.

When upgraded, only those with the password will be able to access the PLC and download new program. Password can be set via ladder, or via HMI, so operators in field can change passwords on their own per company policy.

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