Siemens SINUMERIK 840Di Diagnostic Manual page 428

Overview of Alarms
NCK alarms
26022 Axis %1 encoder %2 measurement with simulated encoder not possible
Parameters: %1 = NC axis number
%2 = Encoder number
Definitions: Alarm occurs on the control when a measurement was made without the encoder hardware (simulated
encoder).
Reaction: Local alarm reaction.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Remedy: - Please inform the authorized personnel/service department. If possible, modify the measuring
motion such that the axis concerned does not have to travel; do not program this axis in the MEAS
block again. However, it is then no longer possible to query a measured value for this axis.
- Ensure that measurement is not taking place with simulated encoders (MD $MA_ENC_TYPE).
Program Clear alarm with the RESET key. Restart part program
Continuation:
26024 Axis %1 machine data %2 value changed
Parameters: %1 = Axis name, spindle number
%2 = String: MD identifier
Definitions: Machine data contains an invalid value and therefore has been changed by the software.
Reaction: Alarm display.
Remedy: Check MD.
Program Clear alarm with the RESET key. Restart part program
Continuation:
26025 Axis %1 machine data %2[%3] value changed
Parameters: %1 = Axis name, spindle number
%2 = String: MD identifier
%3 = Index: MD array
Definitions: Machine data contains an invalid value and therefore has been changed by the software internally to
a valid value.
Reaction: Alarm display.
Remedy: Check MD.
Program Clear alarm with the RESET key. Restart part program
Continuation:
2-428
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006