Code 4349: [Channel %1: ] No free memory space available for transformations.
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] No free memory space available for transformations. 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 = Number of the transformations already active Definitions: Any kinematic transformation in the NCK r equires a defined memory space. If MD18866 $MN_MM_NUM_KIN_TRAFOS does not equal zero, it i ndicates how many kinematic transformations are allowed to be active in the NCK at the same time. If MD18866 $MN_MM_NUM_KIN_TRAFOS equals zero, the maximum number of kinematic transformations that are active at the same time, is dete rmined automatically (currently twenty times the number of the existing channels). Reaction: Correction block is reorganized. Interface signals are set. Alarm display. NC Stop on alarm at block end. Remedy: Increase the value of MD18866 $MN_MM_NUM_KIN_TRAFOS. 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 4349 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 4349.
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