Siemens SINUMERIK 840D Series Diagnostics Manual page 278

1 Alarms
Definitions:
Reactions:
Remedy:
Program Continuation:
20004
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
20005
Parameters:
Definitions:
Reactions:
1-278
In a measuring system with distance-coded reference marks, the distance between two
adjacent markers has been found to be more than twice the distance entered in the
machine data 34300 ENC_REFP_MARKER_DIST.
The control issues the alarm after having made a second attempt in reverse direction with
half the traversing velocity and detecting that the distance is too large again.
- NC Stop on alarm.
- NC Start disable in this channel.
- Alarm display.
- Interface signals are set.
- 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)
Determine the distance between 2 odd reference point markers (reference point marker
interval). This value (which is 20.00 mm on Heidenhain scales) must be entered in the
machine data 34300 ENC_REFP_MARKER_DIST.
Check the reference point track of the scale including the electronics for the evaluation.
Clear alarm with the RESET key. Restart part program
Channel %1 axis %2 reference mark missing
%1 = Channel number
%2 = Axis name, spindle number
In the distance-coded length measurement system two reference marks were not found
within the defined searching distance (axis-specific MD: 34060
REFP_MAX_MARKER_DIST).
No reduction cam is required for distance-coded scales (but an existing cam will be evalu-
ated). The conventional direction key determines the direction of search. The searching
distance 34060 REFP_MAX_MARKER_DIST, within which the two reference point mark-
ers are expected is counted commencing at the start point.
- NC Stop on alarm.
- NC Start disable in this channel.
- Alarm display.
- Interface signals are set.
- 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)
Please inform the authorized personnel/service department. Determine the distance
between 2 odd reference point markers (reference point marker interval). This value
(which is 20.00 mm on Heidenhain scales) must be entered in the machine data 34060
REFP_MAX_MARKER_DIST.
Check the reference point track of the scale including the electronics for the evaluation.
Clear alarm with the RESET key. Restart part program
Channel %1 axis %2 reference point approach aborted
%1 = Channel number
%2 = Axis name, spindle number
Channel-specific referencing could not be completed for all stated axes (e.g., abort
caused by missing servo enable, measuring system switchover, release of direction key,
etc.).
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- 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)
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02