This command loads the compiled project in the PLC.
During compilation the Download-Information gets saved in a file called <projectname>0000000ar.ri , which is used during online change to compare the current program with the one most recently loaded onto the controller, so that only changed program components are reloaded. This file is erased by the command 'Project' 'Clean all'! Concerning Online Change on several PLCs please see 'Online' 'Login'. Note that the *.ri file also gets updated during an Online Change.
Depending on the target system settings at each creation of a boot project in offline mode the *.ri file might be regenerated.
⮫ “'Online' 'Create boot project'”
Only persistent variables keep their values even after a download.