Code 10941: [Channel %1: ] Block %2: Curve table %3: NC SRAM memory full, type %4
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] Block %2: Curve table %3: NC SRAM memory full, type %4 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 = Channel number %2 = Block number, label %3 = Number of curve table %4 = Object type Definitions: Insufficient free dynamic memory during curve table definition. The object type parameter specifies for which curve table object the memory will not suffice: 1: Number of curve tables too small (MD18400 $MN_MM_NUM_CURVE_TABS) 2: Number of linear curve table segments too small (MD18403 $MN_MM_NUM_CURVE_SEG_LIN) 3: Number of polynomial curve table segments too small (MD18402 $MN_MM_NUM_CURVE_SEGMENTS) 4: Number of curve table polynomials too small (MD18404 $MN_MM_NUM_CURVE_POLYNOMS) Reaction: Interpreter stop NC Start disable in this channel. Interface signals are set. Alarm display. Remedy: Please inform the authorized personnel / service department. Delete cu rve tables that are no longer required, or reconfigure the memory space for t he curve tables. The curve table definition process now has to be repeated; see machine data: MD18400 $MN_MM_NUM_CURVE_TABS, MD18402 $MN_MM_NUM_CURVE_SEGMENTS, MD18403 $MN_MM_NUM_CURVE_SEG_LIN, MD 18404 $MN_MM_NUM_CURVE_POLYNOMS. Program Continuation: Clear alarm with the RESET key. Restart part program
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 10941 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.
Have a better solution?
Help the industrial community by sharing your repair experience for code 10941.
Need a searchable reference for more Siemens SINUMERIK 840D CNC manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026