l
leonberger-m
·Posted in Communication

KVD folder missing in CtrlX Core data layer

Hello together, 

after a certain period of time the data structure which is part of the KVD app disappeared / is missing in the CtrlX data layer. 

e.g. by default the samples\kvd is configured for the user directories. 

After a few days this structure just disappeared and all the functions which refer to this structure run into an error. 

1) UA Expert => BadNodeIdUnknown (path: samples/kvd/...)

2) Data Layer => no such path available anymore 

After restarting the CtrlX core the folder is available again:

To guarantee a reliable functionality we have to ensure that the folder is not missing otherwise no data will be received by the OPC-UA communication. (data is provided by the KVD app which exactly provides this folder) 

So question from my side. Is there anyone else who knows such a situation? I am currently running version 1.20 for all system apps as well as for the OPC client, OPC server and KVD app. So there is no update available right now. 

Thanks for your help! 



Best reply by CodeShepherd

In the version 2.6.0 of the ctrlX OS - Key Value Database there were improvements of its own behaviour and underling Go runtime as well as go API were updated. The described error cannot longer be found by our endurance test or at customers already tested it.

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