Siemens SINUMERIK 840D sl Function Manual page 1593

2.7 Referencing by means of actual value adjustment
2.7.1 Actual value adjustment to the referencing measurement system
Function
When actual value adjustment to the referencing measuring system is performed, the
resulting absolute actual position after successful referencing of the measuring system of a
machine axis is transferred directly to all other measuring systems of the machine axis, and
the machine axis is designated as referenced:
DB31, ... DBB60.4 / 60.5 (referenced/synchronized 1/2) = 1
Advantage
When the machine axis switches from an explicitly referenced measuring system to the
measuring system referenced by actual value adjustment, continuous servo control is
assured (servo enable active) because the matched actual position prevents a sudden
change in actual value.
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
The activation of the actual value adjustment to the referencing measuring system is
machine-specifically carried out via:
MD34102 $MA_REFP_SYNC_ENCS = 1
Basic logic functions: Reference Point Approach (R1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.7 Referencing by means of actual value adjustment
Detailed description
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