Sinumerik Alarm 27004 Axis %1, difference safe input %2, NCK %3, drive %4
%1 = Axis number
%2 = Monitoring input
%3 = Interface identifier NCK input
%4 = Interface identifier drive input
A difference has been found on the specified safe input. The state of the specified input signal differed in the two monitoring channels NCK and 611D during the duration set in $MA_SAFE_MODE_SWITCH_TIME. Monitoring in question:
SS/SV = Difference in SGE “Deselection of safe operating stop/Safe velocity”
SS = Difference in SGE “Safe operating stop” SV = Difference in SGEs “Selection safe velocity”
SP = Difference in SGE “Selection safe end position”
SVOVR = Difference in SGEs “Selection SG correction”
Interface identifier NCK input:
SPL For when the SGE is parameterized at the SPL interface.
Onboard input For when the SGE is parameterized at an onboard input.
Interface identifier drive input:
This alarm can be hidden by setting MD $MN_SAFE_DIAGNOSIS_MASK, bit 0 = 0.
– Alarm display.
Check settings for safe input signals (NCK I/Os, PLC DB parameters).
Clear alarm with the RESET key. Restart part program
- Siemens Diagnostics Guide by Siemens