Siemens SINUMERIK 840Di Diagnostic Manual page 366

Overview of Alarms
NCK alarms
20072 Channel %1 axis %2 is not an indexing axis
Parameters: %1 = Channel number
%2 = Axis number
Definitions: The displayed axis is operated as a concurrent positioning axis. Its target position is parameterized in
the FC INDEX-AXIS as indexing position number, but the axis is not an indexing axis.
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department. The FC POS-AXIS for linear and rotary
axes should be used or the axis should be declared as an indexing axis. Corresponding machine data
for indexing axis declaration:
Modify MD 30500: INDEX_AX_ASSIGN_POS_TAB
Modify MD 10900: INDEX_AX_LENGTH_POS_TAB_1
Modify MD 10910: INDEX_AX_POS_TAB_1
Modify MD 10920: INDEX_AX_LENGTH_POS_TAB_2
Modify MD 10930: INDEX_AX_POS_TAB_2
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
20073 Channel %1 axis %2 cannot be repositioned
Parameters: %1 = Channel number
%2 = Axis number
Definitions: The concurrent positioning axis cannot be positioned because it has already been restarted via the
VDI interface and is still active. No repositioning motion takes place and the motion initiated by the
VDI interface is not affected.
Reaction: Alarm display.
Remedy: None.
Program Clear alarm with the Delete key or NC START.
Continuation:
20074 Channel %1 axis %2 wrong index position
Parameters: %1 = Channel number
%2 = Axis name, spindle number
Definitions: For a concurrent positioning axis declared as indexing axis, the PLC has given an index number that
is not available in the table.
Reaction: Alarm display.
Remedy: Please inform the authorized personnel/service department. Check the indexing axis number given by
the PLC and correct this if necessary. If the indexing axis number is correct and the alarm results from
an indexing position table that has been set too short, check the machine data for indexing axis
declaration.
Modify MD 30500: INDEX_AX_ASSIGN_POS_TAB
Modify MD 10900: INDEX_AX_LENGTH_POS_TAB_1
Modify MD 10910: INDEX_AX_POS_TAB_1
Modify MD 10920: INDEX_AX_LENGTH_POS_TAB_2
Modify MD 10930: INDEX_AX_POS_TAB_2
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
20075 Channel %1 axis %2 can currently not oscillate
Parameters: %1 = Channel number
%2 = Axis number
Definitions: The axis cannot perform an oscillating movement now because it is already being traversed, e.g. in
JOG mode.
Reaction: Alarm display.
Remedy: End the other traversing motion.
Program Clear alarm with the Delete key or NC START.
Continuation:
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© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006