Retraction Direction; Offset For The Machine Coordinate Systems - Siemens SINUMERIK 840D sl Function Manual

TE9: Axis pair collision protection
17.3 Startup
NOTICE
Same axis types
The machine axes in an axis pair must be of the same axis type:
• Linear axis
• Rotary axis
Modulo rotary axes
The machine axes in an axis pair must not be of the "modulo rotary axis" axis type.
17.3.4

Retraction direction

The direction of travel for retracting the corresponding machine axis is entered in the following
item of machine data:
MD61517 $MN_CC_PROTECT_SAFE_DIR[n] = yy xx
xx = retraction direction for the 1st axis in the pair
yy = retraction direction for the 2nd axis in the pair
Retraction in the positive direction of travel of the machine axis: xx or yy > 0
Retraction in the negative direction of travel of the machine axis: xx or yy = 0
NOTICE
Machine data change
A change to machine data item $MN_...SAFE_DIR[n] must only be activated when the
protection function is inactive ($MN_...PAIRS[n] = 0).
17.3.5

Offset for the machine coordinate systems

The offset vector for the machine coordinate systems of both machine axes in the axis pair is
specified in the following item of machine data:
MD61518 $MN_CC_PROTECT_OFFSET[n] = <offset>
If both machine axes are located in separate machine coordinate systems, the offset vector is
specified as a vector from the origin of the machine coordinate system for the 2nd axis in the
pair to the origin of the machine coordinate system for the 1st axis in the pair, with reference
to the machine coordinate system for the 1st axis of the pair.
If both machine axes in the axis pair are located in the same machine coordinate system, an
offset vector of 0 must be specified.
NOTICE
Machine data change
A change to machine data item $MN_... OFFSET[n] must only be activated when the
protection function is inactive ($MN_...PAIRS[n] = 0).
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Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions