Siemens Sinumerik 840DiE sl - Page 364

01/2007
11.5 Axes and spindles
11-364
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
Notice
Since the absolute encoder must be recalibrated, the NCK only detects the
following events:
S Gear change with change of gear ratio
S Response to zero mark monitoring (alarm 25020)
S New encoder serial number after replacing the absolute encoder
The status of the absolute encoder is also reset by the NCK to 0 (encoder not
calibrated):
S MD34210: $MA_ENC_REFP_STATE[n] = 0
In all other cases, it is the sole responsibility of the user to indicate the
uncalibrated state of the absolute encoder by manually resetting the status to 0
(Encorder not calibrated) and to repeat the calibration.
/FB1/ Description of Functions, Basic Functions,
R1 Reference point approach
Section:Referencing with absolute value encoders
Table 11-38 Referencing: Interface signals
DB number
Bit, byte Name Refer-
ence
Mode group–specific Signals from PLC to mode group
11, ... 0.7 Mode group reset K1
11, ... 1.2 Machine function REF K1
Mode group–specific Signals from mode group to PLC
11, ... 5.2 Active machine function REF K1
Channel–specific Signals from PLC to channel
21, ... 1.0 Activate referencing
Channel–specific Signals from channel to PLC
21, ... 28.7 (MMC –––> PLC) REF K1
21, ... 33.0 Referencing active
21, ... 35.7 Reset K1
21, ... 36.2 All axes that must have a reference point are referenced
Axis–specific Signals from PLC to axis/spindle
31, ... 1.5/1.6 Position measurement system 1/Position measurement system 2 A2
31, ... 2.4–2.7 Reference point value 1 to 4
31, ... 4.6/4.7 Traversing keys minus/plus H1
31, ... 12.7 Reference point approach delay
Axis–specific Signals from axis/spindle to PLC
31, ... 60.4/60.5 Referenced, synchronized 1/Referenced, synchronized 2
31, ... 64.6/64.7 Traverse command minus/plus H1
Table 11-39 Referencing: Machine data
Number Identifier Name Refer-
ence
General ($MN_ ... )
11300 JOG_INC_MODE_LEVELTRIGGRD INC/REF in jog/continuous mode H1
References
Interface signals
Machine data
11 NCK Commissionin
g
with HMI Advanced