Siemens SINUMERIK 840D sl Function Manual page 687

27352 F_DP: communication error %1, error %2
Parameter %1 = faulty components (NCK/PLC)
%2 = error detection
Explanation Communication between the NCK and PLC can no longer function.
Component with error where the communication error occurred (%1):
● PLC: The PLC was not able to process the OB40 request for F_DP communication within the maximum
monitoring time of 500 ms.
The following error cause is possible (see fault ID %2):
● <> 0: PLC processing of the OB40 not finished.
Response Alarm display
NC start disable in this channel
Interface signals are set
Mode group not ready
NC stop for alarm
A STOP D/E is initiated (this can be set using MD10097 $MN_SAFE_SPL_STOP_MODE) on all axes with
safety functionality.
Processing stop of the F_DP communication is initiated. Stopped SPL connections - type F_RECVDP - output
failsafe values (0) in the direction of the SPL as F-net data.
Remedy Check and possibly increase the F_DP clock cycle
Program con‐ Switch control system OFF and ON again.
tinuation
27353 F_DP:actual cycle time %1 [ms] > parameterized cycle time
Parameter %1 = actual F_DP communications cycle time
Explanation The actual F_DP communication cycle time is greater than the value set using MD13320
$MN_SAFE_SRDP_IPO_TIME_RATIO. The parameterized communication cycle time is continually excee‐
ded on the PLC side.
Response Alarm display
NC start disable in this channel
Interface signals are set
Mode group not ready
NC stop for alarm
A STOP D/E is initiated (this can be set using MD10097 $MN_SAFE_SPL_STOP_MODE) on all axes with
safety functionality.
Remedy Adapt the cycle time using MD13320 $MN_SAFE_SRDP_IPO_TIME_RATIO.
As a minimum, the value displayed in %1 must be set.
The selected cycle time has an effect on the runtime utilization of the PLC module.
This must be taken into account in the setting.
Program con‐ Remove the error and press RESET
tinuation
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
11.2 NCK safety alarms for SINUMERIK 840D sl
Diagnostics
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