54 ● BS DMC-40x0 Command Reference
BS
FUNCTION: Brushless Setup
DESCRIPTION:
The command BS tests the wiring of a sinusoidally commutated brushless motor. If Hall sensors
are connected, this command also tests the wiring of the Hall sensors. This function can only
be performed with one axis at a time.
This command returns status information regarding the setup of brushless motors. The following
information will be returned by the controller:
1. Correct wiring of the brushless motor phases.
2. An approximate value of the motor's magnetic cycle.
3. The value of the BB command (If hall sensors are used).
4. The results of the hall sensor wiring test (If hall sensors are used).
This command will turn the motor off when done and may be given when the motor is off.
Once the brushless motor is properly setup and the motor configuration has been saved in non-
volatile memory, the BS command does not have to be re-issued. The configuration is saved
by using the burn command, BN.
Note: In order to properly conduct the brushless setup, the motor must be allowed to move a
minimum of one magnetic cycle in both directions.
ARGUMENTS: BSA= v, n where
v is a real number between 0 and 10. v represents the voltage level to be applied to each phase.
n is a positive integer between 100 or 1000. n represents the duration in milliseconds that voltage
should be applied to the motor phases.
USAGE: DEFAULTS:
While Moving No Default Value of V 0
In a Program Yes Default Value of n 200
Command Line Yes
Controller Usage
ALL CONTROLLERS
RELATED COMMANDS:
BA Brushless Axis
BB Brushless Phase Begins
BC Brushless Commutation
BD Brushless Degrees
BI Brushless Inputs
BM Brushless Modulo
BO Brushless Offset
BZ Brushless Zero
EXAMPLES:
BSC = 2,900 Apply set up test to C axis with 2 volts for 900
millisecond on each step.
Note: When using Galil Windows software, the timeout must be set to a minimum of 10 seconds (timeout =
10000) when executing the BS command. This allows the software to retrieve all messages returned from
the controller.
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