Siemens SINUMERIK 828D Function Manual page 1231

Parameterization
In addition to the specific machine data required to reference the individual measuring systems, the following
machine data must be set:
• Enable actual value adjustment:
MD34102 $MA_REFP_SYNC_ENCS = 1
• Direct measuring system with distance­coded reference marks:
- MD34200 $MA_ENC_REFP_MODE[
Distance­coded reference marks
- MD30242 $MA_ENC_IS_INDEPENDENT[
During actual value adjustment, the passive direct measuring system is adjusted to the actual position of
the active indirect measuring system, but is not marked as referenced. After the parameterized number of
reference marks have been crossed, the passive direct measuring system is automatically referenced.
Referencing is performed in every operating mode.
Sequence
1. Initial situation: Neither of the measuring systems are referenced:
DB31, ... DBX60.4 = 0 (referenced / synchronized 1)
DB31, ... DBX60.5 = 0 (referenced / synchronized 2)
2. Reference the indirect measuring system according to the measuring system type:
DB31, ... DBX60.4 = 1 (referenced / synchronized 1)
DB31, ... DBX60.5 = 0 (referenced / synchronized 2)
3. Traverse the machine axis across the parameterized number of reference marks.
This automatically references the direct measuring system:
DB31, ... DBX60.4 = 1 (referenced / synchronized 1)
DB31, ... DBX60.5 = 1 (referenced / synchronized 2)
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
15.7 Referencing by means of actual value adjustment
measuring system
] = 3
measuring system
R1: Reference point approach
] = 2
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