Siemens SINUMERIK 828D Programming Manual page 349

No intermediate rounding blocks
An intermediate rounding block is not inserted in the following cases:
● The axis stops between the two blocks.
● The rounding block would slow down the part program execution.
● Rounding is not parameterized.
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
11.2 Continuous-path mode (G64, G641, G642, G643, G644, G645, ADIS, ADISPOS)
This occurs when:
– The following block contains an auxiliary function output before the movement.
– The following block does not contain a path movement.
– An axis is traversed for the first time as a path axis for the following block when it was
previously a positioning axis.
– An axis is traversed for the first time as a positioning axis for the following block when
it was previously a path axis.
– The previous block traverses geometry axes and the following block does not.
– The following block traverses geometry axes and the previous block does not.
– Before tapping, the following block uses
block does not.
– A change is made between
– Axes involved in the transformation are not completely assigned to the path motion
(e.g. for oscillation, positioning axes).
This occurs:
– Between two very short blocks.
Since each block requires at least one interpolation cycle, the added intermediate
block would double the machining time.
– If a block transition
without a reduction in velocity.
Corner rounding would increase the machining time. This means that the value of the
permitted overload factor (MD32310 $MA_MAX_ACCEL_OVL_FACTOR) affects
whether a block transition is rounded or not. The overload factor is only taken into
account for corner rounding with
case of smoothing with
MD20490 $MC_IGNORE_OVL_FACTOR_FOR_ADIS to TRUE).
This occurs when:
– For in blocks
G641 G0
– For in non- blocks
G641 G0
– For on transition from
G641
value from
ADISPOS
– For , all axis-specific tolerances are zero.
G642/G643
G33
and
BRISK SOFT
(continuous-path mode without smoothing) can be traversed
G64
/
G641 G642
(this behavior can also be set for
G643
(default!)
ADISPOS = 0
(default!)
ADIS = 0
and non- or non-
G0 G0
and applies.
ADIS
as preparatory function and the previous
.
. The overload factor has no effect in the
G641
and respectively, the smaller
G0 G0
Path action
and by setting
G642
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