QUESTION:  
How can I preset the maximum number of lines in the WinCC Configuration Tool?

ANSWER:  
The default maximum number of lines set in the WinCC Configuration Tool is 2000.

Fig. 1: Default setting of the maximum number of lines

Proceed as follows to change this value:

Create a new WinCC project folder. Select "No connection".

Fig. 2: Creating a new WinCC project folder

Change the value of the maximum number of lines to the value you require between 1000 and 65535, e.g. 15000.

Fig. 3: Changing the maximum number of lines to the required value

Save the project folder.

Now, when you create a project map, the maximum number of lines is set to the value you have just set in the procedure above.