EDH0162En1040 – 06/99
3.152
MM4005
VS — Define the vector acceleration on trajectory
(trajectory acceleration)
Usage
IMM
PGM
MIP
Syntax
VSnn
or
VS?
Parameters
Description
nn
[double]
— Desired trajectory acceleration.
Range
nn
—
>0
to
Max Trajectory Acceleration
(MTA).
Units
nn
— Units/sec
2
.
Defaults
nn
Missing: MTA.
Out of range: Error C.
Description
This command defines the vector acceleration on trajectory that the con-
troller uses to start and stop execution of the trajectory. In association
with the trajectory velocity this will define the necessary time to reach the
trajectory velocity.
NOTE
The controller calculates automatically MTA for the trajectory to execute
(set of trajectory elements entered before this command) one time this
command is entered and limits the vector acceleration to MTA if the
parameter entered is greater than MTA. It is then pratical to read MTA
just before this command with help of the command XU1 and to read
assigned trajectory acceleration after this command with help of the
command VS? or XU.
In fact, MTA is defined as the minimum value of maximum allowed X
assigned axis and Y assigned axis accelerations.
Returns
If the sign
“?”
takes place of the
nn
value, this command reportes the actu-
al trajectory acceleration value.
Errors
C
—
Parameter out of limits.
S
—
Communication time-out.
Rel. Commands
VV
—
Define the vector velocity on trajectory (trajectory velocity).
XU
—
Tell the vector acceleration on trajectory (trajectory acceleration).
Example
XU1
|
Read MTA.
XU10.0
|
Controller tells MTA.
VS8
|
Define 8 units/sec
2
as trajectory acceleration.
XU
|
Read trajectory acceleration.
XU8.0
|
Controller tells assigned trajectory acceleration.
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