
PROGRAMMING
B–64154EN/01
5. FEED FUNCTIONS
61
Those parameters related to automatic corner deceleration in advanced
preview control mode are shown below.
Parameter description
Normal
mode
Advanced
preview
control mode
Switching the methods for automatic corner de-
celeration
1602#4 1602#4
Lower limit of feedrate in automatic corner decel-
eration based on the angle
1777 1778
Limit angle in corner deceleration based on the
angle
1740 1779
This function cannot be enabled for a single block or during dry run.
This function decelerates the feedrate when the difference between the
feedrates at the end point of block A and the start point of block B along
each axis is larger than the value specified in parameter No. 1781. The
function executes block B when the feedrates along all axes are smaller
than the feedrate specified in parameter No. 1741. In this case, the
function determines that the number of accumulated pulses is zero.
The flowchart for feedrate control is shown below.
START
Yes
Yes
END
No
Is the feedrate difference between
blocks along each axis larger than
the value specified in parameter
No. 1781?
Are the feedrates along all axes
smaller than that specified in
parameter No. 1741?
Further decelerates the
feedrate in block A
The number of accumulated pulses
is determined to be zero and block
B is executed
No
D Advanced preview
control
Limitations
5.4.3.2
Corner deceleration
according to the feedrate
difference between
blocks along each axis
Explanations
D Flowchart for feedrate
control