About SteffenR-

I'd like to add a few more "solutions" to the problem: With the keyboard key "◄" you can collapse the current folder. For me it works good using the arrow keys "up/down" and collapsing with "left". "Track active item" (@MarvinW) is not set by default, but during the training it is recommended and set. I think it helps beginners in the orientation because then the selection in the solution explorer and the open document are the same. If you deactivate this option you have to read the name of the open document carefully and ignore the selection in the solution explorer: If you deactivate "track active item" I recommend you one of the following options: Open Tools > Options in the menu bar and choose a shortcut for "View.TrackActivityinSolutionExplorer", for example with shortcut CTRL+T. Everytime you press the shortcut, the currently open document will be selected in the solution explorer. So instead of the automatical selection you can choose when the solution explorer follows your open documents. Activate the button "Preview Selected Item" in the solution explorer. It opens the documents (methods, FBs, ...) with just one click on the right side:   ... View more

If you get an error "Maximum count of xxx per handler exceeded": For every method there is an own parameter that can be changed in the library manager in the OpconBase / NxBase library. After changing a library parameter you should do a clean project/solution and activate configuration! Keep in mind that increasing these library parameters also increases the PLC cycle time / CPU load. AddUnit              => OPCON_HANDLER_CHILDS_PER_HANDLER AddAddon         => OPCON_HANDLER_ADDONS_PER_HANDLER AddCommand => OPCON_HANDLER_CMDS_PER_CMDHANDLER AddMode           => OPCON_HANDLER_MODES_PER_MODEHANDLER (this is also used for CmdHandler in Control plus V2) AddSubchain   => OPCON_HANDLER_SUBCHAINS_PER_HANDLER ... View more