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Code 231-E01A: CC%2 FS configuration error ERR-ID=%4 ObjId=%5

Issue Description & Safety Warning

The Heidenhain TNC Series CNC has triggered a critical CC%2 FS configuration error ERR-ID=%4 ObjId=%5 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

Param=%6 [Cause of error] - The transferred configuration data for SKERN are faulty. The ERR ID provides information on the faulty machine parameter: 200 - Machine parameter axisGroup: Assigned axis group out of range 201 - Machine parameter axisGroup: Entered axis group not in use. 202 - Drive type and axis group type do not match. 210 - Permissible number of spindles was exceeded 300 - Machine parameter pwmSignalOutput. Input range exceeded 301 - Machine parameter pwmSignalOutput. The same value was used in two separate entries 400 - Machine parameter timeLimitStop1: Input range exceeded 401 - Machine parameter timeLimitStop2: Input range exceeded 600 - Machine parameter distPerMotorTurn: Input range exceeded 700 - Machine parameter speedLimitSom2, speedLimitSom3, speedLimitSom4, rpmLimitSom2, rpmLimitSom3, rpmLimitSom4: Permissible velocity limit exceeded 800 - An unknown additional function is activated in the config object CfgSafety 810 - Machine parameter timeToEmStopTest: Input range exceeded 820 - Machine parameter watchdogTime: Input range exceeded 900 - Machine parameter brakeAfter: Entered connective operation is not allowed 901 - Machine parameter brakeAfter: A connective operation to yourself is not allowed 1000 - Machine parameters plcCount: PLC / SPLC-MC input range of configured cycle time has been exceeded 1100 - Machine parameters idleState: Configuration of subsequent condition after a stop reaction SS2 is out of the permissible range 1200 - The drive assignment is missing for a safe axis - Faulty parameter values were entered - An internal software error has occurred [Error correction] - Check the ERR ID: 200 - Check the entered value of the axis group 201 - Enter only axis groups that are actually being used 202 - Check the axis group assignment 210 - Check the number of spindles in your system 300 - Check the entity pwmSignalOutput. Input value too large. 301 - Check entity pwmSignalOutput. The same value is in [528] 10/2023 two separate entries. 400 - Check the entered time Parameter value = maximum permissible time 401 - Check the entered time Parameter value = maximum permissible time 600 - Check the entered value 700 - Check the value entered in speedLimitSom for axes, rpmLimitSom for spindles Parameter value = 2 -> SLS_2, Parameter value = 3 -> SLS_3, Parameter value = 4 -> SLS_4 800 - Check the entered additional functions 810 - Check the entered time 820 - Check the entered time 900 - Check the input 901 - Check the input 1000 - Check the input (maximum = 30 ms) 1100 - Check the input 1200 - Check the drive assignment - 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 231-E01A 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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