Nc & Plc Initialization; Referencing With Absolute Value Encoders; Adjustment; Adjustment Methods - Siemens PUMA V400/M Operation Manual

2. NC & PLC Initialization
2.1

Referencing with Absolute Value Encoders

The advantage of machine axes with absolute encoders is that the reference point approach
required with incremental measuring systems after, for example:
Power on of controller (POWER ON) Or Deselection of "Parking" of machine axis
Can be omitted after a one-time adjustment operation, and the actual value system of the
machine axis is immediately synchronized to the determined absolute position
2.2

Adjustment

Adjustment of an absolute encoder involves matching the actual value of the encoder with
the machine zero once and then setting it to valid
The current adjustment status of an absolute encoder is indicated in the following axis-
specific machine data element of the machine axis on which the absolute encoder is
connected
MD34210 $MA_ENE_REFP_STATE (status of absolute encoder)
Status
0
1
2
2.3

Adjustment methods

The following adjustment methods are supported :
 Adjustment by entering a reference point offset
 Adjustment by entering a reference point value
 Automatic adjustment with probe
 Adjustment with BERO
2.4

Readjustment

Readjustment of the absolute encoder is required after :
 Gear change between load and absolute encoder
 Removal/installation of the absolute value encoder
 Removal/installation of the motor with the absolute value encoder
 SRAM data loss of the NC
 Battery failure
 Function : PRESET
Encoder not calibrated
Encoder adjustment enabled
Encoder is calibrated
Meaning
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