168 ● MT DMC-40x0 Command Reference
MT
FUNCTION: Motor Type
DESCRIPTION:
The MT command selects the type of the motor and the polarity of the drive signal. Motor
types include standard servomotors, which require a voltage in the range of +/- 10 Volts,
and step motors, which require pulse and direction signals. The polarity reversal inverts
the analog signals for servomotors, and inverts logic level of the pulse train, for step
motors.
ARGUMENTS: MT n,n,n,n,n,n,n,n or MTA=n where
n = 1 Specifies Servo motor
n = -1 Specifies Servo motor with reversed polarity
n = 1.5 Specifies PWM/Sign servo drive
n = -1.5 Specifies PWM/Sign servo drive with reversed polarity
n = -2 Specifies Step motor with active high step pulses
n = 2 Specifies Step motor with active low step pulses
n = -2.5 Specifies Step motor with reversed direction and active high step pulses
n = 2.5 Specifies Step motor with reversed direction and active low step pulses
n = ? Returns the value of the motor type for the specified axis.
USAGE: DEFAULTS:
While Moving No Default Value 1,1,1,1
In a Program Yes Default Format 1.1
Command Line Yes
Controller Usage
ALL CONTROLLERS
OPERAND USAGE:
_MTn contains the value of the motor type for the specified axis.
RELATED COMMANDS:
CE Configure encoder type
EXAMPLES:
MT 1,-1,2,2 Configure a as servo, b as reverse servo, c and d as
steppers
MT ?,? Interrogate motor type
V=_MTA Assign motor type to variable
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