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All BASIC commands
Section 4-2
249
4-2-225 SRAMP
/i
4-2-226 STEP
See
FOR..TO..STEP..NEXT
.
4-2-227 STEP_RATIO
/i
Type
Axis parameter
Syntax
SRAMP
Description
The
SRAMP
parameter contains the S-curve factor. The S-curve factor
controls the amount of rounding applied to the trapezoidal profiles. A
value of 0 sets no rounding. A value of 10 sets maximum rounding. The
default value of the parameter is 0.
SRAMP
is applied to the
FORWARD
,
MOVE
,
MOVEABS
,
MOVECIRC
,
MHELICAL
and
REVERSE
commands.
Notes:
•
Using S-curves increases the time required for the movement to
complete.
•
The S-curve factor must not be changed while a move is in
progress.
Arguments
N/A
Example
No example.
See also
AXIS
.
Type
Axis command
Syntax
STEP_RATIO(numerator, denominator)
Description
This command sets up a ratio for the output of the stepper axis. Every
servo-period the number of steps is passed through the
STEP_RATIO
function before it goes to the step pulse output.
Pulse Count Out = (numerator)/(denominator) *
MPOS
.
STEP_RATIO
affects both
MOVECIRC
and
CAMBOX
.
Notes:
•
The
STEP_RATIO
function operates before the divide by 16 factor
in the stepper axis.
•
Large ratios should be avoided as they will lead to either loss of res-
olution or much reduced smoothness in the motion. The actual
physical step size x 16 is the BASIC resolution of the axis and use of
this command may reduce the ability of the Motion Controller to
accurately achieve all positions.
•
STEP_RATIO
does not replace
UNITS
. Do not use
STEP_RATIO
to
remove the x16 factor on the stepper axis as this will lead to poor
step frequency control.
Arguments
•
numerator
An integer number between 0 and 16777215 that is used to define
the numerator in the above equation.
•
denominator
An integer number between 0 and 16777215 that is used to define
the denominator in the above equation.
Содержание SYSMAC CJ Series
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