Siemens SINUMERIK 840D sl Function Manual page 690

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27801 Safety operating mode inconsistent: MD "%1" = %2 ; PLC configuration = %3
Parameter %1: $MN_SAFE_MODE
%2: Value from $MN_SAFE_MODE
%3: Value of the PLC configuration
Explanation The value in MD13370 $MN_SAFE_MODE does not match the value of the PLC configuration.
Response Alarm display
NC start disable in this channel
Interface signals are set
Mode group not ready
NC Stop on alarm at end of block
Channel not ready
Remedy Standardize the safety operating mode by adapting in MD13370 $MN_SAFE_MODE or the PLC configuration.
If a -1 is displayed for the value of the PLC configuration, the following applies: The safety operating mode
defined in the PLC configuration is not permitted.
The PLC configuration must be changed.
Program con‐ Switch control system OFF and ON again.
tinuation
27810 Axis %1: Safety operating mode inconsistent: $MN_SAFE_MODE = %2; MD: "%3" = %4
Parameter %1: Axis name, spindle number
%2: MD value
%3: MD name
%4: MD value
Explanation The safety operating mode parameterized using MD13370 $MN_SAFE_MODE does not match the safety
enables parameterized using the displayed machine data.
This alarm occurs in the following contexts:
● For safety operating mode "SINUMERIK Safety Integrated plus (F-PLC)" the safety enables are set in
MD36901 $MA_SAFE_FUNCTION_ENABLE.
Response Alarm display
NC start disable in this channel
Interface signals are set
Mode group not ready
NC Stop on alarm at end of block
Channel not ready
Stop cyclic SIC/SCC or PROFIsafe communication between the NCK and drive.
Remedy Standardize the safety operating mode for all NC axes.
Program con‐ Switch control system OFF and ON again.
tinuation
690
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated