Continuous-Path Mode (G64, G641, G642, G643, G644, G645, Adis, Adispos) - Siemens Sinumerik 840D sl Programming Manual

The movement is decelerated and stopped briefly at the corner point.
Note
Do not set the limits for the exact stop criteria any tighter than necessary. The tighter the limits,
the longer it takes to position and approach the target position.
G603
The block change is initiated when the control has calculated a set velocity of zero for the axes
involved. At this point, the actual value lags behind by a proportionate factor depending on the
dynamic response of the axes and the path velocity. The workpiece corners can now be
rounded.
Configured exact stop criterion
A channel-specific setting can be made for G0 and the other commands in the first G function
group indicating that contrary to the programmed exact stop criterion a preset criterion should
be used automatically (see machine manufacturer's specifications).
References
Function Manual, Basic Functions, Continuouspath Mode, Exact Stop, Look Ahead (B1)
12.2 Continuous-path mode (G64, G641, G642, G643, G644, G645, ADIS,
ADISPOS)
In continuous-path mode, the path velocity at the end of the block (for the block change) is not
decelerated to a level which would permit the fulfillment of an exact stop criterion. The objective
of this mode is, in fact, to avoid rapid deceleration of the path axes at the block-change point
so that the axis velocity remains as constant as possible when the program moves to the next
block. To achieve this objective, the "Look-head" function is also activated when continuous-
path mode is selected.
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2

12.2 Continuous-path mode (G64, G641, G642, G643, G644, G645, ADIS, ADISPOS)

Path action
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