NC Commissioning with HMI Advanced
11.5 Axes and spindles
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
439
NOTICE
The NC can detect a required readjustment of the absolute value encoder only during
the following events:
• Gear change with change of gear ratio
• Response to zero mark monitoring (alarm 25020)
• New encoder serial number after replacing the absolute encoder
Subsequently, the status of the absolute value encoder will be set back to 0
automatically by the NC (encoder not adjusted):
• MD34210 $MA_ENC_REFP_STATE[n] = 0
In all other cases, it is the sole responsibility of the user to indicate the uncalibrated
state of the absolute encoder by manually resetting the status to 0 (Encorder not
calibrated) and to repeat the calibration.
References:
/FB1/ Function Manual, Basic Functions, R1 Reference point travel, Chapter "Referencing
with absolute value encoders"
Interface signals
Table 11-37 Referencing: Interface signals
DB number Bit, byte Name
Mode-groupspecific Signals from PLC to mode group
11, ... 0.7 Mode group reset
11, ... 1.2 Machine function REF
Mode-groupspecific Signals from mode group to PLC
11, ... 5.2 Active machine function REF
Channel-specific Signals from PLC to channel
21, ... 1.0 Activate referencing
Channel-specific Signals from channel to PLC
21, ... 28.7 (MMC -> PLC) REF
21, ... 33.0 Referencing active
21, ... 35.7 Reset
21, ... 36.2 All axes that must have a reference point are referenced
Axis-specific Signals from PLC to axis/spindle
31, ... 1.5/1.6 Position measuring system 1/position measuring system 2
31, ... 2.4-2.7 Reference point value 1 to 4
31, ... 4.6/4.7 Traversing keys minus/plus
31, ... 12.7 Reference point approach delay
Axis-specific Signals from axis/spindle to PLC
31, ... 60.4/60.5 Referenced, synchronized 1/Referenced, synchronized 2
31, ... 64.6/64.7 Traverse command minus/plus
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