Yes, if you want to change the DMX value range for a specific parameter/fader, you can do this.

Double-tap on the fader's knob (or open the parameter options view > Value) to open the parameter value keypad. In this view, tap the "i" button in the upper right corner to display the Hi and Low values for this fader.

Note that this actually alters the range of the DMX output values (it's not just a UI change).