Siemens SINUMERIK 840D sl Series Diagnostics Manual page 412

Overview of Alarms
- Alarm display.
- NC Stop on alarm.
Remedy: Verification of the connections between NCK and drive.
Check for compliance with the EMC requirements.
Program Con- Clear alarm with the RESET key. Restart part program
tinuation:
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: Differences in the compared data have occured in a cyclic data cross check between
NCK and PLC. Parameter %1 specifies the erroneous system variable ($A_INSI,
$A_OUTSI, $A_INSE, $A_OUTSE or$A_MARKERSI) with error index %2.
Special cases:
• Alarm "Error in NCK-PLC data cross check, $MN_PREVENT_SYNACT_LOCK[0], ..."
means that the SPL startup status has been set differently in the NCK and PLC.
• Alarm "Error in NCK-PLC data cross check, $MN_SPL_STOP_MODE[0], ..." means that
the SPL stop reaction (Stop D or E) has been set differently in the NCK and PLC.
• Alarm "Error in NCK-PLC data cross check, TIMEOUT[0], NCK: 0" means that the com-
munication between NCK and PLC is generally disturbed and that a data cross check can
no longer be performed.
With data cross-check errors on system variables $A_INSE, the hardware assignment
parameterized in MD $MN_SAFE_IN_HW_ASSIGN[0...7] is displayed in addition to the
affected system variables in alarm parameter %1, so that the affected hardware connec-
tion is shown directly by the specifications in the alarm line.
Example: Error in NCK-PLC data cross-check, DMP 04.03 Bit 01=$A_INSE[2], NCK: 1;
The specifications in the example (04.03) correspond to the entries made in the machine
data $MN_SAFE_IN_HW_ASSIGN[0...7] for the mentioned system variable.
They specify:
DMP 04.xx The drive number of the affected terminal block (value range = 01...21).
DMP xx.03 Module number of the input module (value range = 01...08).
The indicated numbers are represented as hexadecimal numbers, same as in MD
$MN_SAFE_IN_HW_ASSIGN[0...7].
Same as with the numbering of the inputs on the DMP modules, the bit numbers begin
with value 0 (value range = 00...15).
When assigning the SPL inputs to the NC onboard inputs, the extended alarm text is as
follows:
Error in NCK-PLC data cross-check, NC-Onboard-In 01=$A:INSE[1], NCK: 1; 2.
With parameter %4 a specific alarm message can be configured on HMI for all listed sys-
tem variables:
%4 = 0: Error SPL startup status ($MN_PREVENT_SYNACT_LOCK[0,1] -
DB18.DBX36.0) or different stop reaction ($MN_SAFE_SPL_STOP_MODE -
DB18.DBX36.1).
%4 = 1.... 64: Error in system variable $A_INSE[1...64]
%4 = 65...128: Error in system variable $A_OUTSE[1...64]
%4 = 129...192: Error in system variable $A_INSI[1...64]
%4 = 193...256: Error in system variable $A_OUTSI[1...64]
%4 = 257...320: Error in system variable $A_MARKERSI[1...64]
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005