DMC-40x0 Command Reference BM • 49
BM
FUNCTION: Brushless Modulo
DESCRIPTION:
The BM command defines the length of the magnetic cycle in encoder counts.
ARGUMENTS: BM n,n,n,n,n,n,n,n or BMA=n where
n is a decimal value between 1 and 1000000 with a resolution of 1/10. This value can also be
specified as a fraction with a resolution of 1/16.
n = ? Returns the brushless module for the specified axis.
USAGE: DEFAULTS:
While Moving No Default Value 0
In a Program Yes Default Format 0
Command Line Yes
Controller Usage
ALL CONTROLLERS
OPERAND USAGE:
_BMn indicates the cycle length in counts for the specified axis.
RELATED COMMANDS:
BA Brushless Axis
BB Brushless Phase Begins
BC Brushless Commutation
BD Brushless Degrees
BI Brushless Inputs
BO Brushless Offset
BS Brushless Setup
BZ
BZ Brushless Zero
EXAMPLES:
BM ,60000 Set brushless modulo for B axis to be 60000
BMC=100000/3 Set brushless modulo for C axis to be 100000/3 (33333.333)
BM ,,,? Interrogate the Brushless Module for the D axis
Note: Changing the BM parameter causes an instant change in the commutation phase.
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