Speed adjustment

Hi all,
In remote mode is able to display speed of the robot. It is done by "SPEED ADJUSTMENT". Please see attached photo. I look for this in User's Manuals which I have but I didn't find anything.

My questions are:
1. With parameter switch on this option?
2. Is possible to change this speed during remote mode?
3. Is the value of this speed some parameter (ex.S2Cxxxx)?

If anyone knows how it works please write.

Hi,
Yes, I forgot to write controller generation - it is DX200.
I checked parameters and it is like in linked post.
So, thank you 95devils.