Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 219)

L-force | PLC Designer
The Individual Components

DMS 3.2 EN 02/2011 TD29 217
If in the project options, category Desktop, the option 'Online in security mode' is
activated and if the target system supports the functionality, in the Login dialog
automatically also the Project information will be displayed. This is the project
information of the project which is currently opened in »PLC Designer« and which is
already available on the controller. Via button Details << you can close this
information part of the dialog. If the 'Online in security mode' option is not activated,
you can explicitly open the project information display in the dialog via button
Note!
It depends on the target which button is set as default button.
Online Change does not cause a re-initialization of the variables, thus modifications
of the initialization values will not be regarded ! Retain variables keep their values
when an Online Change is done, they won't do that at a re-download of the project
(see below, 'Online' 'Download').
After a successful login all online functions are available (if the corresponding settings
in 'Project' 'Options' category 'Build' have been entered). The current values are
monitored for all visible variable declarations.
Use the 'Online' 'Logout' command to change from online back to offline mode.
Relations between Login – Build – Download – Online Change
See below a diagram which shows the relations between Login, Build (Compilation),
Download and Online Change:
The following terms are used:
Source current PLC Designer project (*.pro-file, local PC)
Compile Compile information from the last build process, is needed for incremental compilation
(*.ci-file, local PC)
Download Information on what was loaded to the PLC at the last download (*.ri-file, local PC)
PLC Project currently available on the PLC (*.prg-file, target system)