Re: BDI / Gecko 201 settings?

From: allan_r9@...

Can some one point me to information about any special settings in
EMC .ini files that need to be configured for interfacing to Gecko
201(A) drives? I think the MIN_OUTPUT, and MAX_OUTPUT settings refer
to voltages? to the drives, so looking for this setting. I hope to
move motors tonight when I finish the interface cable from computer
to power box.

Allan

Sounds like you are well on your way. When you use steppermod.o or
freqmod.o you don't need to worry about min and max output. These
variables are for servo systems like you might connect to a Servo-To_Go
card or Jon's Parallel Port Motion Control.

What you do need to worry about setting is the input and output scale so
that you get the correct number of steps per unit of travel. Remember that
the 201 is a microstepping drive so whatever the full steps per inch you
compute multiply that value by 10 to get the microsteps per inch.

When you use steppermod.o set input scale to the value that you compute and
leave output scale at 1.000.

When you use freqmod, set both variables to the same number.

INPUT_SCALE = 1000 0
OUTPUT_SCALE = 1000 0

A minus in front of the number will reverse the direction of the motor
signal.

HTH

Ray