After startup, C80 enters the N/A mode

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1

During normal operation, C80 suddenly restarted and after startup, C80 entered the N/A mode.
At this moment, AS is unable to connect with C80, and SDM is also unable to connect.

Only after performing a USB update on the C80 will it return to normal.

What are the possibilities for C80 to enter the N/A category?

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2

Hello,

If you can not get Access to the Device with the Automation Studio its difficult to get a logger entry. So hard to tell what goes wrong. I just start Brainstorming โ€ฆ

  • I would start with checking the Versions of B&R Software in comparison to latest version.
  • Does the application use some File-Write functions FileIO-Library or similar? If yes can they be temporary disabled for testing.
  • If the Device does not reconnect after the restart it looks like some how the AR-Installation gets corrupt but this is only a assumption.
  • Is it the only device showing this issue / do you have other C80 for Comparision?
  • Can you install a Empty Dummy Project, does it show same issues?
  • How long is the intervall of the issue daylie / weekly โ€ฆ ?

Downloads for C80 (Bios / Linux Image / User-Manual)

Checking versions

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Greetings
Michael

3

Hi!

Michael Bertsch is right with his comment to update to the latest versions.

We had the issue that Linux and Automation Runtime due to the paralel access to memory trigger a race condition in the hypervisor. If you use Automation Studio 4 this issue is fixed with Automation Runtime O4.93. If you use Automation Studio 6 this issue is fixed with Automation Runtime 6.4.

Best regards, Manuel

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4

Hi,

Thanks for reply.

  • Does the application use some File-Write functions FileIO-Library or similar? If yes can they be temporary disabled for testing.

ใ€‹I need to verify this point.

  • Is it the only device showing this issue / do you have other C80 for Comparision?

ใ€‹This is not an isolated case. It has also occurred on other C80 models.

  • Can you install a Empty Dummy Project, does it show same issues?

ใ€‹I updated a new program via USB, and then C80 was able to return to normal.

  • How long is the intervall of the issue daylie / weekly โ€ฆ ?

ใ€‹This is quite random. It might take several months. However, the same procedure did not result in any abnormalities on the PPC2200.

5

Thank you for your information.

I will recommend customer upgrade AR