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Gemini GV6K/GT6K Command Reference
TVEL
Transfer Current Commanded Velocity
Type
Transfer
Syntax
<a_><!>TVEL
Units
Reported value is in units/sec (scalable by SCLV)
(linear motors: see DMEPIT for linear/rotary conversion)
Range
n/a
Default
n/a
Response
TVEL: *TVEL23.3450
See Also
DMEPIT, DMONAV, DMONBV, DMVLIM, ERES, SCALE, SCLV, TVELA, V,
[ VEL ]
Product Rev
GT6K 6.0
GV6K 6.0
The
TVEL
command reports the internal commanded velocity. It is not the programmed velocity (
V
), and is
limited by
DMVLIM
. The sign determines the direction of motion. If scaling is enabled (
SCALE1
), the
TVEL
value is scaled by the velocity scaling factor (
SCLV
).
Stepper Axes:
If scaling is disabled (
SCALEØ
), the value is measured in revolutions/sec (actual velocity in
commanded counts/sec divided by the drive resolution
DRES
value).
Servo Axes:
If scaling is disabled (
SCALEØ
), the value is measured in encoder revs/sec or resolver revs/sec.
TVELA
Transfer Current Actual Velocity
Type
Transfer
Syntax
<a_><!>TVELA
Units
Reported value is in units/sec
(linear motors: see DMEPIT for linear/rotary conversion)
Range
n/a
Default
n/a
Response
TVELA: *TVELA+1.55
See Also
DMEPIT, DMONAV, DMONBV, DMVLIM, SCALE, SCLV, SFB, TVEL, V,
[ VEL ], [ VELA ]
Product Rev
GT6K 6.0
GV6K 6.0
For servos, the
TVELA
command reports the velocity as derived from the feedback device. The sign
determines the direction of motion.
Rotary Motors:
Positive values represent clockwise motion and negative values represent
counter-clockwise motion (assuming you connected the feedback device
according to instructions in the
Hardware Installation Guide
).
Counter-clockwise
(negative counts)
Clockwise
(positive counts)
You can use the
TVELA
command at all times; therefore, even if no motion is being commanded,
TVELA
will still report a non-zero value as it detects the servoing action.
Units of Measure:
GT6K Steppers
: The value reported by steppers is the
TVEL
value,
not
velocity derived from the
feedback device. If scaling is disabled (
SCALEØ
), the value is measured in revolutions/sec (actual
velocity in commanded counts/sec divided by the drive resolution
DRES
value).
GV6K Servos
: If scaling is enabled (
SCALE1
), the velocity value will be scaled by the velocity
scaling factor (
SCLV
). If scaling is not enabled (
SCALEØ
), the value returned will be in encoder
revs/sec or resolver revs/sec.
Example:
TVELA
; Reports the current actual velocity; since no motion is
; commanded, the servoing velocities are reported.
; Example response is: *TVELA+0.0097
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