Code 235200: <location>TM: Calibration data
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical <location>TM: Calibration data 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: An error was detected in the calibration data of the Terminal Module. Alarm value (r2124, interpret decimal): The hundred thousands and ten thousands location spec ifies the component Id of the Terminal Module where the fault occurred. SINAMICS-Alarms The thousands location specifies whether the analog i nput 0 (=0) or analog output 1 (= 1) is involved. The hundreds location specifies the fault type: 0: No calibration data available. 1: Offset too high (> 100 mV). The tens and ones location specifies the number of the input involved. Remedy: Power down the unit and power up again. If the fault is still presen t, replace the module/board.
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 235200 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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