Siemens SINUMERIK 840D sl Function Manual page 762

K2: Axis Types, Coordinate Systems, Frames
10.5 Frames
Preconditions
The following requirements must be fulfilled for frame mapping:
● The data management frames used for mapping must be configured:
MD28083 $MC_MM_SYSTEM_DATAFRAME_MASK (system frames)
● Channel-specific data management frames must be explicitly enabled for mapping:
MD10616 $MN_MAPPED_FRAME_MASK (enable frame mapping)
Note
For global data management frames, mapping is always carried out. An enable is not
required.
Parameterization
The parameterization of the mapping relationships is realized in the axis-specific machine data:
MD32075 $MA_MAPPED_FRAME[<AXn>] = "AXm"
AXn, AXm: Machine axis name with n, m = 1, 2, ... max. number of machine axes
Mapping rules
The following rules apply for frame mapping:
● The mapping is bidirectional.
An axial frame can be written for AXn or AXm. The frame data is always accepted and
taken for the other axis.
● All parameterized mapping relationships are always evaluated.
When writing an axial frame of axes AXn, all mapping relationships are evaluated and the
frame data accepted for all directly and indirectly involved axes.
● The mapping is global across all channels.
When writing an axial frame of axis AXn or AXm for a channel-specific frame, the frame
data is accepted for all channels in which AXn or AXm are parameterized as channel axes.
● When writing an axial frame using geometry or special axis name, the mapping relationships
are evaluated via the machine axes currently assigned to the geometry or special axis.
● Mapping is frame-specific.
When writing an axial frame, the frame data is only mapped within the same channel-
specific or global data management frame.
Note
Data consistency
The user / machine manufacturer is solely responsible for ensuring that after a frame is
written, consistent frame data is available in all channels, e.g. by using channel
synchronization.
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions