Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 400)

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398 DMS 4.1 EN 03/2011 TD29
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Additionally: If there are already one or several applications on the PLC from one or
several other projects, a message box will appear where you can decide to remove it /
them from the PLC before downloading the current application. (This corresponds to
the functionality of the Applications dialog of the Device Editor).
Abb. 195 Message box, Applications on PLC
Note:Child applications (e.g. for the Symbol Configuration, if supported by the
device, or for the Trace), which have been downloaded to the PLC once and deleted
within the device tree during a subsequent logout from the device, will provoke no
online change at a repeated login to the device. At least there will be a request if you
want to delete them also from the device.
Build process before Login
Before Login and if the currently concerned application project has not been compiled
since having got opened or since the last modification, it will get compiled. This means
the project will be built corresponding to a "Build" run in offline mode and additionally
compilation code for the PLC will be generated.
If errors are detected during compilation, you will get a message box informing you
about that with the following text: "There are compile errors. Do you want to login
without download?" You might choose to correct the detected errors first, or to login
nevertheless, in this case to that version of the application which is possibly already
available on the controller.
The errors are listed in the message window in category "Build". See : Build.
Information on the download process
When the project gets loaded to the PLC completely at Login or partially at Online
Change, then the message window will show information on the generated code size,
the size of global data, the needed memory space on the controller and in case of
online change also on the concerned POUs.