Collision Detection - Siemens Sinumerik 840D sl Programming Manual

3.4.4

Collision detection

Activation via the NC program
Although the "Collision detection" function is available only in the Siemens mode, it can also
be used in the ISO dialect mode. Activation and deactivation must be undertaken only in the
Siemens mode.
G290
CDON
G291
...
...
G290
CDOF
G291
Activation by setting machine data
MD20150 $MC_GCODE_RESET_VALUES[22] = 2: CDON (effective modal)
MD20150 $MC_GCODE_RESET_VALUES[22] = 1: CDOF (not effective modal)
Function
With active CDON (Collision Detection ON) and active tool radius compensation, the control
system monitors tool paths through look-ahead contour calculation. This Look Ahead
function allows possible collisions to be detected in advance and permits the control to
actively avoid them.
With deactivated bottleneck detection (CDOF), a search is made in the previous traversing
block (at inside corners) for a common point of intersection for the current block; if necessary
the search is extended to even earlier blocks. An error message is triggered if no point of
intersection is found with this method.
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
;Activation of the Siemens mode
;Activation of the detection of bottlenecks
;Activation of the ISO dialect mode
;Activation of the Siemens mode
;Deactivation of the detection of bottlenecks
;Activation of the ISO dialect mode
Motion commands
3.4 Tool offset functions
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