After replacing the CF card on 4pp065.0571-X74F, entering service mode, what is the reason?

Hi @CUPERHE , Welcome to the Community! >After replacing the CF card on 4pp065.0571-X74F, entering service mode, what is the reason? Open the system logger and you’ll see the reason. Do you have the prj and Automation Studio install on your pc? or you see “service mode” just on your HMI? Ciao …

How to collect system diagnostic [image] Service Mode - What is it and how to collect diagnostics How-To & Wikis What is Service Mode? Service mode means that no task classes are running on the PLC. The application program is not running; the PLC is halted. Th…

Yes，"service mode"just on HMI

It may be due to hardware and software incompatibility.

share with us logger or at least print screen from logger. We can tell you more maybe :slight_smile:

I found the reason: it is because the HMI BIOS is missing system files, causing the check to fail, so it enters service mode.

but PP65 does not have BIOS..or?

Hi @CUPERHE , Any update? Have you found the cause of the problem? If no could you upload SystemDump as Jaroslav asked few days ago? Thanks Ciao Valerio

4pp065.0571-X74F

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kovarj (Jaroslav Kovar) April 16, 2026, 5:37am 3

How to collect system diagnostic

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4pp065.0571-X74F

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