260 ● YA DMC-40x0 Command Reference
YA
FUNCTION: Step Drive Resolution
DESCRIPTION:
The YA command specifies the resolution of the step drive, in step counts per full motor step, for
Stepper Position Maintenance mode, and to configure the stepper amplifier.
ARGUMENTS: YA m,m,m,m,m,m,m,m or YAn = m where
n is A,B,C,D,E,F,G or H or any combination to specify the axis or axes.
m is 0 to 9999 which represents the drive resolution in step counts per full motor step.
For SDM-44040 only - m is 1, 2, 4, 16 for full, half, 1/4 and 1/16 step drive resolution.
with the SDM-44040 the YA command configures the actual resolution of the stepper driver.
USAGE: DEFAULTS:
While Moving No Default Value 2
In a Program Yes Default Format 1.4
Command Line Yes
OPERAND USAGE:
_YAn contains the resolution for the specified axis.
RELATED COMMANDS:
QS Error Magnitude
YS Stepper Position Maintenance Mode Enable, Status
YB Step Motor Resolution
YC Encoder Resolution
YR Error Correction
EXAMPLES:
1. Set the step drive resolution for the SDM-44140 Microstepping Drive:
YA 64,64,64,64
2. Query the D axis value:
MG_YAD
:64.0000 Response shows D axis step drive resolution
Notes:
1. This value must be the same as the step drive resolution for the axis. The error magnitude (QS)
will climb quickly causing a false error state if the assigned value differs from the actual.
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