Siemens SINUMERIK 840D Series Diagnostics Manual page 304

1 Alarms
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Remedy:
Program Continuation:
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Channel %1 $AA_TOFF cleared
%1 = Channel number
If the tool position is changed with RESET and $AA_TOFF is active during RESET, the
position offset ($AA_TOFF) is cleared.
- Local alarm reaction.
- Alarm display.
- Interface signals are set.
- Correction block is reorganized.
- NC Stop on alarm at block end.
Modify the RESET setting in $AA_TOFF_MODE.
Clear alarm with NC START or RESET key and continue the program.
Channel %1 block %2 illegal change of tool direction with $AA_TOFF active
%1 = Channel number
%2 = Block number, label
If an offset has been activated in tool direction by means of $AA_TOFF[i], no block is
allowed to be activated in which the offset axis assignment i is modified (plane change,
tool change cutting tool <=> turning tool, transformation change, TRAFOOF, TCARR=0,
geometry axis change)
- Local alarm reaction.
- Alarm display.
- Interface signals are set.
- Correction block is reorganized.
- NC Stop on alarm at block end.
• Modify part program
• Program TOFFOF()
Clear alarm with NC START or RESET key and continue the program.
Channel %1 block %3 axis %2 touch probe already deflected, edge polarity not pos-
sible
%1 = Channel number
%2 = Axis name, spindle number
%3 = Block number
The probe programmed under the keyword MEAS or MEAW is already deflected and has
switched. For a further measuring operation, the probe signal must first be canceled (qui-
escent state of the probe).
The axis display is of no significance at the present time but an axis-specific evaluation
has been planned for later stages of development.
- Alarm display.
- Interface signals are set.
- Local alarm reaction.
- NC Stop on alarm.
- NC Start disable in this channel.
- If the axis is a single axis when this alarm is triggered, the alarm is only effective for this
axis (not effective for e.g. the channel or mode group)
Verify the start position of the measuring operation or check the probe signals. Are the
cables and connectors in good order?
Clear alarm with the RESET key. Restart part program
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02