Hello, I propose to create a user function block which contains the SCAL FB. The IN, OUT, STA and ERR pins should be directly routed to pins of the user FB. Additionally the scaling parameters of the SCAL FB that you want to change should be declared as PAR_EXP in the UFB interface. This way you can read and write them from Freelance Operations. Then create a User Faceplate for your User FB with alphanumeric display elements for the scaling parameters. Instances of that User FB should replace the SCAL functions you have used so far.
Please note that in order to create a UFB you would need the professional edition of Freelance Engineering.