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The slow_accel parameter is used to control motor acceleration slope when the
head stage stepper motor when it is running at SLOW speed. The motor ramps up
from slow_start_vel to slow_end_vel at a rate specified by slow_accel and ramps
back down using the same acceleration slope as it reaches its target position.
If the value in slow_start_vel is larger than the value in slow_end_vel, then
the stepper motor will start and stop at the speed specified by the slow_end_vel
and will not ramp up or down.
Decreasing this value will reduce the motor acceleration.
For small acceleration values, the motor can take a very large number of steps
to go from the start velocity to the end velocity. If the distance that the
motor needs to move is too short for it to reach the end velocity, then it
will perform a partial acceleration to the highest velocity attainable under the
current acceleration value before starting to ramp back down to stop at the
target position.
SLOW speed is used when zeroing the head for the currently loaded media.
It is also the default speed for moveto commands.
The units used by this parameter are somewhat arbitrary. To convert them to
actual steps per second, please consult the tables in the CY-545 data book.
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