Siemens SINUMERIK 840D Description Of Functions page 328

6 Alarms
6.1 Alarms for SINUMERIK 840digital
27093
Checksum error NCK-SPL, %1, %2, %3
Parameter %1 = supplementary information about the type of error
%2 = supplementary information about reference size
%3 = supplementary information about current size
Explanation The checksum error in the NCK SPL. The file /_N_CST_DIR/_N_SAFE_SPF
was subsequently modified. The safe programmable logic (SPL) in the NCK
may be corrupted. Parameter %1 provides further information about the type of
change:
%1 = FILE_LENGTH: The file length has changed.
%1 = FILE_CONTENT: The file contents have changed.
%2 specifies the variable calculated as the reference (file length, checksum
about file contents),
%3 specifies the current size calculated cyclically.
Response Alarm display
Remedy Check the file and when the last change was made to that file. Reload the
original file and start the monitoring system again with a power on.
Program continuation Power-down the control and power-up again.
27094
Write access to system variable %1 only allowed from NCK-SPL
Parameter %1 = name of the safety system variable involved
Explanation Write access to one of the safety system variables is only possible from
part program /_N_CST_DIR/_N_SAFE_SPF. If this error occurs, an instruction
from another part program was detected.
Response Alarm display
Remedy Check the part program used for write access to safety system variables.
Program continuation Clear the alarm with the RESET key. Restart part program.
27095
%1 SPL protection not activated
Parameter %1 = name of the component for which the protection is not activated
(NCK or PLC).
Explanation The protective mechanisms for the SPL have not been activated. The
commissioning phase of the SPL has not yet been completed. For an error in
the crosswise data comparison between NCK and PLC, a stop response
(Stop D or E) is not initiated.
Response Alarm display
Remedy Remedy for NCK: Activate the protective mechanisms by writing to MD
$MN_PREVENT_SYNACT_LOCK[0,1]. The number range of the synchronous
action IDs used in the SPL must be entered in this MD.
Remedy for PLC: Activate the protective mechanisms by setting the appropriate
data bit in DB18.
Program continuation Clear the alarm with the RESET key. Restart part program.
27096
SPL start not allowed
Explanation To start the SPL in the protected state ($MN_PREVENT_SYNACT_LOCK[0,1]
not equal to 0), at least one axis must have safety integrated functionality
activated (via MD $MA_SAFE_FUNCTION_ENABLE) beforehand. Without this
functionality it is only possible to operate the SPL in the commissioning state.
Response Mode group not ready
Channel not ready
NC start inhibit in this channel
NC stop for alarm
Alarm display
Interface signals are set
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
© Siemens AG 2003 All Rights Reserved
11.03