242 ● TV DMC-40x0 Command Reference
TV
FUNCTION: Tell Velocity
DESCRIPTION:
The TV command returns the actual velocity of the axes in units of encoder count/s. The value
returned includes the sign.
ARGUMENTS: TV nnnnnnnnnn where
n is A,B,C,D,E,F,G or H or any combination to specify the axis or axes
No argument will provide the velocity for all axes.
USAGE: DEFAULTS:
While Moving Yes Default Value -
In a Program Yes Default Format 8.0
Command Line Yes
Controller Usage
ALL CONTROLLERS
OPERAND USAGE:
_TVn contains the value of the velocity for the specified axis.
EXAMPLES:
VELA=_TVA Assigns value of A-axis velocity to the variable VELA
TVA Returns the A-axis velocity
:3420
Note: The TV command is computed using a special averaging filter (over approximately 0.25 sec for
TM1000). Therefore, TV will return average velocity, not instantaneous velocity.
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