?Corrected from:
Behavior of the new version:
Description of the behavior:
The PLC Designer is showing that a download of application is required, although nothing is changed.
Example:
Conditions under which the behavior occurs
Under certain circumstances, you may unexpectedly receive a request to download the application
Possible scenarios:
- A boot application is started on the controller. The PLC project matches the boot application. Now a device description is changed in the PLC application and logged in. The changed project is not saved. The original PLC project is now used again. No changes have been made to the boot application.
- It can occur when using a PLC project with two or more controllers. A change then is made (e.g. a new variable is declared).
The project is now transferred to a controller. Instead of OnlineChange a download is selected for transfer.
A boot project is created again and then logged onto the second controller with the project. - The PLC project is copied to another directory (only the project file)
- A projectarchive is used, but Download Information files are not activated
?
Affected products:
PLC Designer
Short-term measure, recommendations, evaluation:
The only way to assure that a direct login is possible is to save the whole PLC project folder as backup immediately after a boot application is created.
