
PROGRAMMING5. FEED FUNCTIONS
B–63514EN/01
72
When the corner angle is smaller than the angle specified in the
parameter, the relationship between the feedrate and time is as shown
below. Although accumulated pulses equivalent to the hatched area
remain at time t, the next block is executed because the feedrate of the
automatic acceleration/deceleration circuit is smaller than the
parameter–set value. This function is effective only for movement on
the selected plane.
t
Feedrate V
Block A
Block B
Parameter–set feedrate
Time t
The angle between two blocks (blocks A and B) is assumed to be angle
θ, as shown below.
1. Between linear movements
θ
θ
θ
θ
2. Between linear and circular movements
(angle between the linear movement
and tangent to the circular movement)
3. Between circular movements
(angle between the tangents to
the circular movements)
The machining angle is compared with the angle specified in parameter
(No. 1740) for movements on the selected plane only. Machining
feedrates are compared with that specified in parameter (No. 1741) for
movement along the first and second axes on the selected plane only. This
means, when movement occurs along three or more axes, only that
movement along the first and second axes on the selected plane is
considered.
Corner roundness is determined by the angle and feedrate specified in
parameter (Nos. 1740 and 1741). To always make a sharp corner, set
the angle to zero and the feedrate to 180000 (equivalent to 180
degrees).
When G90 (exact stop) is specified, exact stop is performed irrespective
of the angle and feedrate specified in parameter (Nos. 1740 and 1741).
This function cannot be enabled for a single block or during dry run.
D Feedrate and time
D Angle between two
blocks
D Selected plane
D Corner roundness
D Exact stop
Limitations