Code 230-0231: Compensation table (%2) cannot be read
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Compensation table (%2) cannot be read 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
[Cause of error] Could not find or read the given compensation table. [Error correction] - Check the name and directory of the configuration table saved in the configuration editor through the keyword "TABCMA". - Check the directory of the compensation table saved in the configuration editor through the keyword "oemTable". - The tables assigned to the axes in the configuration table must be in the directory of the compensation tables. - The SQL server was given a table file with a syntactically incorrect file name. The file name of the table must begin with a letter, as in M123.D. Change the table's file name. - Check the configuration table (*.cma) - Check the compensation table (*.com) - Inform your service agency
Source: HEIDENHAIN NC Error Messages — TNC7/640/620/320/128, CNC PILOT 640, MANUALplus 620 (10/2023)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Heidenhain TNC Series CNC Alarms
Heidenhain controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 230-0231 on the TNC Series CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Heidenhain's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4497 Heidenhain TNC Series CNC codes.
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