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 207498: <location>LR: Measuring pr obe evaluation not possible

Issue Description & Safety Warning

The Siemens SINUMERIK 840D CNC has triggered a critical <location>LR: Measuring pr obe evaluation not possible 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: All objects Reaction: NONE Acknowledge: NONE Cause: When evaluating the measuring probe, an error occurred. Alarm value (r2124, interpret decimal): 6: The input terminal for the measuring probe is not set. 4098: Error when initializing the measuring probe. 4100: The measuring pulse frequency is too high. > 50000: The measuring clock cycle is not a multiple integer of the position controller clock cycle. SINAMICS-Alarms Remedy: De-activate the measuring probe evaluation (BI: p2509 = 0 signal). Re alarm value = 6: Set the input terminal for the measuring probe (p0488, p0489 or p2517, p2518). Re alarm value = 4098: Check the Control Unit hardware. Re alarm value = 4100: Reduce the frequency of the measur ing pulses at the measuring probe. Re alarm value > 50000: Set the clock cycle ratio of the meas uring clock cycle to the position c ontroller clock cycle to an integer multiple. To do this, the currently effective measuring cloc k cycle can be determined from the alarm value as follows: Tmeas[125µs] = alarm value - 50000. With PROFIBUS, the measuring clock cycle corre sponds to the PROFIBUS clock cycle r2064[1]. Without PROFIBUS, the measuring clock cycle is an internal cycle time that cannot be influenced.

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 207498 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 207498.

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