Sinumerik Alarm 27090 Error in data cross check NCK-PLC, %1[%2], NCK: %3; %4 ALSI

Sinumerik Alarm 27090 Error in data cross check NCK-PLC, %1[%2], NCK: %3; %4 <ALSI>

Parameters:
%1 = Name of system variable in which the error was detected
%2 = System variable array index extension
%3 = NCK comparison value extension
%4 = Cross-check array index extension

Definitions:
Error in the external wiring of the SPL terminals results in the previously issued alarm with information about the faulty system variables $A_INSE[1…64]. Via the MD $MN_SAFE_IN_HW_ASSIGN[0…7], the machine operator has to search for the module over which the system variable is supplied. To simplify the diagnosis, the specification of the affected system variables in alarm parameter %1 is extended. In addition to the names of the affected system variables ($A_INSE), the hardware assignment parameterized in MD $MN_SAFE_IN_HW_ASSIGN[0…7] is displayed, so that the affected HW connection can be determined from the information in the alarm line. This extension is only made when there is a data cross check error at the $A_INSE system variables. Example: Error in data cross check NCK PLC, DMP 04.03 bit 01=$A_INSE[2], NCK: 1; 2 The information in the example (04.03) corresponds to the entries made in the MD $MN_SAFE_IN_HW_ASSIGN[0…7] about the system variables. They state: DMP 04.03 bit 01The drive number of the affected terminal block (value range = 01…21) DMP 04.03 bit 01Module number of the input module (value range = 01…08) The stated numbers are hexadecimally displayed as in the MD $MN_SAFE_IN_HW_ASSIGN[0…7]. The bit-number specification begins, as does the numbering of the inputs on the DMP modules, with the value 0: DMP 04.03 bit 012nd terminal (value range = 00… 15) When assigning the SPL inputs to the NC onboard inputs, the extended alarm text looks like this: Error in data cross check NCK PLC, NC onboard input 01=$A:INSE[1], NCK: 1; 2

Reactions:
– Alarm display.

Remedy:
Find the difference between the monitoring channels.
Possible causes:
• Incorrect wiring
• Incorrect SPL
• Incorrect assignment of axial SGEs to the internal interface $A_OUTSI
• Incorrect assignment of axial SGAs to the internal interface $A_INSI
• Incorrect assignment of SPL SGE’s to the external interface $A_INSE
• Incorrect assignment of SPL SGA’s to the external interface $A_OUTSE

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