According to Datasheet Reference:
In order to convert the SPEED value in step/s, the following formula can be used:
[step/s] = (SPEED X 2 –28)/ tick
That would mean that if I would like to work with step/seconds I have to multiply it like this (stepsPerSec * 67.10886) to get the real Value.
So if I run my Motor with 10 steps/sec for 60 Seconds at 128 Microsteps, the Motor have to make 76800 microsteps.
But if I get (read) a Position Register after 60 Seconds I am always getting bigger Value.
After try and error, I settled down to multiply my step/seconds with 65.9200 to get a 76800 steps.
Could it be that formula in Datasheet is wrong?