Siemens SINUMERIK 840Di Function Manual page 1482
Basic machine
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- Diagnostic manual (880 pages) ,
- Manual (552 pages) ,
- System overview (55 pages)
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Detailed Description
2.7 Referencing by means of actual value adjustment
Note
In order to improve positioning precision by determining the measuring-system-specific
encoder fine information, we recommend explicitly re-referencing the measuring system
previously referenced by actual value adjustment after switching over.
Activation
Actual value adjustment to the referencing measuring system is activated machine axis
specifically by means of:
MD34102 $MA_REFP_SYNC_ENCS = 1
2.7.2
Actual value adjustment to the referenced measurement system
Functionality
If a machine axis has several measuring systems and one of them is referenced, the
remaining measuring systems can be referenced by actual value adjustment to the
measuring system already referenced.
Advantage
Referencing does not take as long because the path to be traversed only has to be
sufficiently along to allow elimination of the backlash in both measuring systems.
If the distance to the traversing range limits is large enough, referencing can be started at
any point along the traversing range of the machine axis in any direction because no zero
mark, reference point cam, etc., is required.
Parameterization
The following machine data must be parameterized for actual value adjustment to a
referenced measuring system:
• Homing mode: Actual value adjustment to a referenced measuring system
• Traverse path for backlash recovery:
2-42
MD34200 $MA_ENC_REFP_MODE[
MD34080 $MA_REFP_MOVE_DIST[
measuring system
] = 6
measuring system
] (reference point distance)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Reference Point Approach (R1)
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