number of Objects increase by import of edited FBS
On each import the number of objects in our controller rises.
Number of Objects reached the limit.
How can we decrease the object List without export + import and load hole station.
Objects do not increase in count after import and no - exporting and importing the projects back will NOT decrease it.
I'm guessing that the SFC you are editing is getting bigger and bigger with every modification and the increase in object number is correlated to new steps, transitions, programs and FBs you are using. Of course this can cause hitting the limit at some point, but the question is not how to decrees the object count (unless you have such an option, for example there is a unused part of program/application that can be deleted) but how to increase the limit or if it's at all possible. Good news are that you can change the limit in controller properties (Hardware Structure > right click a controller > Parameters > Boot Parameters > Max. no. of Objects). Bad news - changing any Boot Parameters changes how memory is allocated by controller and this can't be loaded on the fly (aka by Load Changed Objects) but instead requires Load whole station. What's more you should check if you can extend the Object limit at all, because only increasing it without changing anything else will cut controllers RAM by the same amount, as all memory types (so RAM, PRAM, Object memory, redundancy memory...) use the same Application Memory block of the controller.
So to sum it up - check the memory of the station (you can use system variables or Webserver to see what's the status) and increase Object limit, if it's possible. Remember that this will require Load Whole station, but without it you will not be able to add any more programs, Function blocks, hardware objects etc. to your project.
Hope this helps,