Delete Distance-To-Go; Delete Distance-To-Go With Preparation, Deldtg, Deltg (Axis1 - Siemens sinumerik 840d Programming Manual

Motion-Synchronous Action
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10.4 Actions within synchronized actions
840 D 840 D
NCU 571 NCU 572
NCU 573

10.4.4 Delete distance-to-go

Delete distance-to-go can be triggered for a path
and for specified axes depending on a condition.
The possibilities are:
• Fast, prepared delete distance-to-go
• Delete distance-to-go without preparation (SW 4.3
and higher)

10.4.5 Delete distance-to-go with preparation, DELDTG, DELTG (axis1,..)

Function
Prepared delete distance-to-go with DELTDG
permits a fast response to the triggering event and is
therefore used for time-critical applications, e.g., if
• the time between delete distance-to-go and the start
of the next block must be very short.
• the condition for delete distance-to-go will very
probably be fulfilled.
Sequence
At the end of a traversing block in which a prepared
delete distance-to-go was triggered, preprocess stop is
activated implicitly.
Continuous path mode or positioning axis
movements are therefore interrupted or stopped at
the end of the block with fast delete distance-to-go.
The distance-to-go can be retrieved with the system
variable $AC_DELT or $AC_DELT[axis].
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
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