Siemens SINUMERIK 840D sl Function Manual page 653

27090 Error in crosswise Data comparison NCK-PLC %1 [%2], NCK: %3; %4<ALSI>
Remedy Analyze the displayed value and evaluate DB18: SPL_DELTA on the PLC side.
Find the difference between the monitoring channels.
Possible causes:
Incorrect wiring
Incorrect SPL
The axis-specific SGE incorrectly assigned to the internal interface $A_INSI
The axis-specific SGA incorrectly assigned to the internal interface $A_INSI
The SPL-SGE incorrectly assigned to the external interface $A_INSE
The SPL-SGA incorrectly assigned to the external interface $A_OUTSE
Different SPL commissioning status has been set in the NCK and PLC
Different SPL stop response has been set in the NCK and PLC
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
27091 Error in crosswise data comparison, NCK-PLC, STOP of %1
Parameter %1 = supplementary information about the monitoring channel that has initiated the stop
Explanation The monitoring channel specified in %1 (NCK or PLC) has initiated a STOP D or E (depending on the pa‐
rameterization in MD10097 $MN_SAFE_SPL_STOP_MODE). Alarm 27090 provides additional information
about the reason for the Stop D/E.
Response Alarm display
A STOP D/E is initiated (this can be set using MD10097 $MN_SPL_STOP_MODE) on all of the axes with
safety functionality if the SPL commissioning phase (MD11500 $MN_PREVENT_SYNACT_LOCK[0,1] not
equal to 0) has been completed.
Remedy Evaluate the alarm parameters of Alarm 27090 and correct the SPL, or check the internal SPL interfaces to
the safety monitoring channels in the NCK and drive.
Program con‐ Clear the alarm with the RESET key. Restart the part program.
tinuation
27092 Communications interrupted for crosswise data comparison NCK-PLC, error detected by %1
Parameter %1 = supplementary information about the detecting monitoring channel
Explanation In the monitoring channel (NCK or PLC) specified in the alarm text, the delay stage (1 s) for communication
monitoring has been exceeded. The other monitoring channel did not send new data within this time.
Response Alarm display
A timer of 5 s is started - after it has expired
● The external NCK-SPL outputs are deleted (cleared)
● The PLC goes to stop.
Remedy Do not start the SPL anymore. Check the system components (PLC must have the correct version of FB15
and have DB18).
Program con‐ Switch control system OFF and ON again.
tinuation
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
11.2 NCK safety alarms for SINUMERIK 840D sl
Diagnostics
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