Galil Motion Control DMC-40x0 Series, Command Reference Manual

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42 ● BB DMC-40x0 Command Reference
BB
FUNCTION: Brushless Phase Begins
DESCRIPTION:
The BB function describes the position offset between the Hall transition point and
θ
= 0, for a
sinusoidally commutated motor. This command must be saved in non-volatile memory to be
effective upon reset.
ARGUMENTS: BB n,n,n,n,n,n,n or BBA=n where
n is a signed integer which represent the phase offset of the selected axes, expressed in multiples
of 30
°
.
n = ? returns the hall offset 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
EXAMPLES:
BB, 30,,60
The offsets for the Y and W axes are 30
°
and 60
°
respectively
OPERAND USAGE:
_BBn contains the position offset between the Hall transition and
θ
= 0 for the specified axis.
RELATED COMMANDS:
BA Brushless Axis
BC Brushless Commutation
BD Brushless Degrees
BI Brushless Inputs
BM Brushless Modulo
BO Brushless Offset
BS Brushless Setup
BZ Brushless Zero
Note: BB is only effective as part of the BC command or upon reset.