Code 129945: %1: The current NCK version (%2) is too old for this type of time measuring.
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical %1: The current NCK version (%2) is too old for this type of time measuring. alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Parameters: %1 = NCU name %2 = NCK software version of NCU %1. Definitions: Measuring method "1" configured with setting M easureMode of section [DAT] in ITS.INI cannot be used, as the current NCK version is too old. Remedy: Either upgrade NCK software to at least 511300 or select measuring method "0".
Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Siemens SINUMERIK 840D CNC Alarms
Siemens controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 129945 on the SINUMERIK 840D CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Siemens's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4014 Siemens SINUMERIK 840D CNC codes.
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