Siemens SINUMERIK 840Di Diagnostic Manual page 318

Overview of Alarms
NCK alarms
16938 Channel %1 action %2<ALNX> aborted due to active gear change
Parameters: %1 = Channel ID
%2 = Action number/action name
Definitions: Reorganization events are, among others, subprogram abort, delete distance-to- go and interrupts,
axis replacement, exiting the correction state. These events wait for the end of a gear change.
However, the maximum waiting period has elapsed.
Reaction: NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: Program must be aborted with Reset and, if necessary, GEAR_CHANGE_WAIT_TIME must be
increased.
Program Clear alarm with the RESET key. Restart part program
Continuation:
16939 Channel %1 action %2<ALNX> rejected due to active gear change
Parameters: %1 = Channel ID
%2 = Action number/action name
Definitions: Reorganization events that are possible in Stop state, e.g mode change, are waiting for the end of the
gear change. However, the maximum waiting period has elapsed.
Reaction: Interface signals are set.
Alarm display.
Remedy: Repeat action or increase MD GEAR_CHANGE_WAIT_TIME.
Program Clear alarm with the Delete key or NC START.
Continuation:
16940 Channel %1 action %2<ALNX> wait for gear change
Parameters: %1 = Channel ID
%2 = Action number/action name
Definitions: Reorganization events are waiting for the end of a gear change. The alarm is displayed during the
waiting period.
Reaction: Alarm display.
Warning display.
Remedy: Alarm is suppressed by means of ENABLE_ALARM_MASK bit 1 == 0.
Program Alarm display showing cause of alarm disappears. No further operator action necessary.
Continuation:
2-318
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006