
B–61404E/08
5. FEED FUNCTIONSPROGRAMMING
71
(1)Specification
When the difference between the specified feedrate at the end point of
block A and the specified feedrate at the start point of block B along
each axis is larger than the value specified in parameter No. 483, this
function reduces the feedrate at the corner. This means that the
execution of block B is suspended until the feedrates after
acceleration/deceleration along the X–axis, Y–axis, Z–axis, and 4th
axis become smaller than the value specified in parameter No. 482.
The flowchart for this control mode is shown below.
START
Is the feedrate difference be-
tween blocks along each axis
larger than the value specified
in parameter No. 483?
Are the feedrates after accel-
eration/deceleration along the
X–axis, Y–axis, Z–axis, and
4th axis smaller than the value
specified in parameter No.
482?
Yes
Block B is executed together
with block A deceleration.
Yes
END
No
No
Further reduces the
feedrate in block A.
When the feedrate difference between blocks along each axis is larger than
the value specified in parameter No. 483, the relationship between the
feedrate and time will be as shown below. The movement of block A
indicated by the hatched area remains at time t. However, the execution
of block B is started because the feedrate after acceleration/deceleration
has become smaller than the value set in parameter No. 482.
Parameter–set
value
Feedrate after acceleration/deceleration
Block A Block B
Timet
Fig. 5.8 (c)
D Corner deceleration
based on feedrate
difference between
blocks along each axis
(with bit 3 of parameter
No. 395 set to 1)