DP_MSG_IDENTIFICATION not received by UI after reconnect or waking up

[amichon]

I have an issue with the identification of a new DP created during UserInterface is disconnected but not stopped or device running UserInterface is on standby (mobile UI or Desktop UI running on Windows tablet)

When the UI wakes up my project runs a dpQuery which returns a recordset but the dpids are not known by the dpIdentificationCache.

On DesktopUI the identification cache seems to be automatically enabled because i have the both corresponding files created in the data folder. It is not possible to deactivate it.

in conclusion it seems that there is a problem with the identification by the UI of the points created while the network connection is interrupted or when the device is on standby.

Is there a workaround to force to refresh the dpidentification cache in the memory of the UserInterface ?

[kilianvp]

No that does not work! The cache is normal! Every manager uses the cache. There is only the possibility to use the cache (useLocalIdentification = 0) or a file (useLocalIdentification = 1). By default, useElemNameForReadRequest is set to 1, so the missing information should actually be requested. You can try to disconnect the network maybe the dpidentification will be fetched again.

[amichon]

I have opened a SR for that because it seems that is really a bug.

[amichon]

It is resolved in WinCC OA 3.17 P016 and maybe soon in 3.18

[leoknipp]

The fix is already included in the next patch for WinCC OA 3.18.
It is planned to release the patch within the next few days.

Best Regards
Leopold Knipp
Senior Support Specialist