i think i have the same problem.

i need value correction on my Z axis. Tool moves more than the value i entered. For example program exists the "Z-40" line but machine moves the Z axis to -60 in the actually. So i have to make a correction about this. 

And another problem is spindle speed. Spindle speed doesn't go more than 500 rpm. (switched on Auto mode)

Thank you

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Split from Sinumerik 808D Controller - how to configure the steps/mm of my axis.