When executing online change, the message "Download failed: Unknown reason" appears

Corrected from:
-
Behavior of the new version:
-

Description of the behavior:
The following message occurs:


 

Conditions under which the behavior occurs:
The behavior described above can occur if a change was made in the PLC application with the PLC Designer and this change was downloaded with Online Change to the controller 

Affected products:
Controller c430
Controller c520
Controller c550

Short-term measures, Recommendations,Rating:
Instead of the Online Change the PLC application can be downloaded to the controller with Download.

This functional limitation has been observed very rarely so far.

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URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/202500226/1/
Meta data
Taxonomy: Controller c430 , Controller c520 , Controller c550 , Controller c500
AKB-ID: 202500226
Last update: 2025/08/20
Category: Version Informations

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