Unassigned signal inputs at function blocks (FIXED-FREE)

Question:
How does the function 'FIXED-FREE' in the function block editor display the signal linkage?

Answer:
If a function in the drive controller is not used, the GDC displays in the function block editor either the signal 'FIXED-FREE', or no signal linkage at all is shown at the input of the corresponding function block. In both cases the function is not used.

Example: The functions NSET1-RFG1-STOP (stop ramp generator) and NSET1-RFG1-0 (ramp generator decelerates along the ramp to 0) are not activated. In the function block presentation in the GDC both inputs are presented without designation.
The relevant codes C0410/005 (NSET1-RFG1-STOP) and C0410/006 (NSET1-RFG1-0) show the input 'FIXED FREE' in the GDC / the values 0 or 255.