Referencing By Means Of Actual Value Adjustment; Actual Value Adjustment To The Referencing Measurement System - Siemens SINUMERIK 840D Function Manual

R1: Referencing

10.7 Referencing by means of actual value adjustment

MD30340 $MA_MODULO_RANGE_START (start position of the modulo range)
Note
The reference point position is mapped on the parameterized (fictive) modulo range even with
axis function "Determination of reference point position rotary, distance-coded encoder within
the configured modulo range":
MD30455 $MA_MISC_FUNCTION_MASK (axis functions), BIT1 = 1
10.7 Referencing by means of actual value adjustment
10.7.1

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
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Axes and spindles
Function Manual, 06/2019, A5E47437747B AA