Hi Amit,
To display values on the KMotionCNC Face you can use the KMotionCNC Screen Editor. See the Screen Editor description here:
KMotionCNC Screen Editor - Dynomotion
#1 Use the KMotionCNC Screen Editor to make a Screen Script with a control of DROLabel Style with an associated persist variable number.
#2 Write KFLOP C Code to format the value you wish to display into a string using sprintf and associate the string with the persist variable number that matches the control on the screen.
See the example in this video that adds 2 numbers and displays the result on the screen in a DROLabel. Here is a video tutorial (start at the 13 minute mark)
https://youtu.be/uQWDttzKuDA?t=13m44s
HTH
Regards