Siemens Sinumerik 840D sl Diagnostic Manual page 428

Overview of Alarms
NCK alarms
Program Con- Switch control OFF - ON.
tinuation:
27093 Checksum error NCK-SPL, %1, %2, %3
Parameters: %1 = Extension indicating the type of error
%2 = Extension indicating the reference variable
%3 = Extension indicating the actual variable
Definitions: A checksum error has occurred in the NCK SPL. The file /_N_CST_DIR/_N_SAFE_SPF was subse-
quently modified. The safe programmable logic (SPL) in the NCK may be corrupted. Parameter %1
indicates the type of modification:
- %1 = FILE_LENGTH: the file length has changed.
- %1 = FILE_CONTENT: the file contents have changed.
%2 specifies the reference variable (file length, checksum of file contents), %3 specifies the actual
variable which is calculated cyclically.
Reaction: Alarm display.
Remedy: Check the file and the time of the last modification to the file. Reload the original file and start the mon-
itoring system again with a Power On.
Program Con- Switch control OFF - ON.
tinuation:
27094 Write access to system variable %1 only allowed from NCK-SPL
Parameters: %1 = Name of safety system variable concerned
Definitions: Write access to a safety system variable is only allowed from the part program
/_N_CST_DIR/_N_SAFE_SPF. If this error occurs, an instruction from another part program was
detected.
Reaction: Alarm display.
Remedy: Check the part programs you are using for write accesses to safety system variables.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
27095 %1 SPL protection not activated
Parameters: %1 = Name of the component on which the protection is not activated (NCK or PLC)
Definitions: The protection features are not activated for the SPL. The startup phase of the SPL is not yet com-
plete. No stop reaction (Stop D or E) was initiated on an error in data cross-comparison between NCK
and PLC.
Reaction: Alarm display.
Remedy: - Remedy for NCK: Activate the protection features with MD $MN_PREVENT_SYNACT_LOCK[0,1].
The number range of the synchronized action IDs used in the SPL must be entered in this MD.
- Remedy for PLC: Activate the protection features by setting the appropriate data bit in DB18.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
27096 SPL start not allowed
Definitions: To start the SPL in protected state (MD $MN_PREVENT_SYNACT_LOCK[0,1] not equal 0) Safety
Integrated functionality must first be activated for at least one axis (via MD
$MA_SAFE_FUNCTION_ENABLE). Without this functionality it is only possible to operate SPL in
start-up state.
Reaction: Mode group not ready.
Channel not ready.
NC Start disable in this channel.
Interface signals are set.
Alarm display.
NC Stop on alarm.
Channel not ready.
Remedy: Start up axial Safety Integrated functionality or remove the SPL protection via MD
$MN_PREVENT_SYNACT_LOCK[0,1].
Program Con- Switch control OFF - ON.
tinuation:
2-428
SINUMERIK 840D sl, 840Di sl, SINAMICS, Diagnostics Manual (DAsl), 03/2009
© Siemens AG, 2009. All Rights Reserved
03/2009