Siemens SINUMERIK 840D sl Programming Manual page 636

Motion synchronous actions
10.1 Basics
● Optimizing runtime-critical applications (e.g. a tool change)
● Fast response to an external event
● Programming AC controls
● Setting up safety functions
● ....
Programming
A synchronized action is programmed on its own in a separate block and triggers a machine
function as of the next executable block (e.g. traversing movement with G0, G1, G2, G3).
Synchronized actions comprise up to 5 command elements with different tasks:
Syntax:
DO <action1> <action2> ...
<KEYWORD> <condition> DO <action1> <action2> ...
ID=<n> <KEYWORD> <condition> DO <action1> <action2> ...
IDS=<n> <KEYWORD> <condition> DO <action1> <action2> ...
636
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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