FaultResolve
Back to Search Directory
Search this section

Search Siemens SINUMERIK 840D CNC

Search other Siemens SINUMERIK 840D CNC alarms without going back to the model list.

Search all database

Code 235224: <location>TM: Zero mark synchronization interrupted

Issue Description & Safety Warning

The Siemens SINUMERIK 840D CNC has triggered a critical <location>TM: Zero mark synchronization interrupted 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

Message value: %1 Drive object: TM41 Reaction: NONE Acknowledge: NONE SINAMICS-Alarms Cause: The zero mark synchronization with the encoder to be emulated was interrupted. Alarm value (r2124, interpret decimal): 0: The encoder is not in the ready state (e.g. encoder parked) 1: An absolute encoder was connected. 2: The encoder r0479[0...2] interconnected with C I: p4420 is already communicating with another TM41 (precisely one TM41 can be interconnec ted with a specific r0479[0...2]). 3: The BICO interconnection to Terminal Modu le 41 (TM41) was removed (CI: p4420 = 0 signal). 4: The encoder connected with CI: p4420 has carrie d out an EDS changeover (this operation is not supported, set p4420 to 0 and interconnect again). 5: The maximum number of revolutions of the encoder was exceeded. 6: Encoder in an invalid state. 7: Encoder in an invalid state. 8: Encoder in an invalid state (the encoder is not parameterized or the interconnected signal source is not in the cyclic state). Remedy: None necessary. - if the encoder changes into the ready state, t hen a synchronization operati on that was previously interrupted is carried out again. - if the synchronization was interrupted due to t he maximum permissible sy nchronization duration, then a new synchronization is not carried out. - for an absolute encoder, no synchronization is carried ou t, the zero mark is always output at the zero revolution of the TM41.

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 235224 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 235224.

Manual conversion service

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.

Convert PDF fault-code charts and manuals into clean data.
Build public SEO pages or private internal search tools.
Prioritize updates around codes and manuals people search for.
Request manual conversion Email PDFs to manuals.errordb@gmail.com
Advertisement

Space reserved for Google AdSense / Industrial Affiliate Links

Monetization target for 2026

Related Siemens SINUMERIK 840D CNC Codes