Sinumerik Alarm 27004 Axis %1, difference safe input %2, NCK %3, drive %4

Sinumerik Alarm 27004 Axis %1, difference safe input %2, NCK %3, drive %4

Parameters:
%1 = Axis number
%2 = Monitoring input
%3 = Interface identifier NCK input
%4 = Interface identifier drive input

Definitions:
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 $MA_SAFE_MODE_SWITCH_TIME. Monitoring in question:
SS/SV = Difference in SGE “Deselection of safe operating stop/Safe velocity”
SS = Difference in SGE “Safe operating stop” SV = Difference in SGEs “Selection safe velocity”
SP = Difference in SGE “Selection safe end position”
SVOVR = Difference in SGEs “Selection SG correction”
Interface identifier NCK input:
DMP=
= Drive number of terminal block (1…31)
= Submodule number (1…8)
= Terminal number (1…16)
= Value of NCK SGE (0,1)
SPL For when the SGE is parameterized at the SPL interface.
= Parameterizable system variable range (01=$A_INSID, 02=$A_INSED)
= System variable double word (1,2) = Bit number in system variable double word (1…32)
= Value of NCK SGE (0,1)
Onboard input For when the SGE is parameterized at an onboard input.
= Input number = 01 …04
= Value of NCK SGE = 0,1
Interface identifier drive input:
DBX=
= Byte number in axial DB (22, 23, 32, 33)
= Bit number in byte (0…7)
= Value of drive SGE (0,1)
This alarm can be hidden by setting MD $MN_SAFE_DIAGNOSIS_MASK, bit 0 = 0.

Reactions:
– Alarm display.

Remedy:
Check settings for safe input signals (NCK I/Os, PLC DB parameters).

Program Continuation:
Clear alarm with the RESET key. Restart part program