What causes Siemens SINUMERIK alarm 62318?

Parameter or machine data configuration error. Hardware fault on the NC or drive component. Part program error or illegal command. Communication fault between NC and drive or I/O modules. Software or firmware error requiring system restart.

How do I fix Siemens SINUMERIK alarm 62318?

1. Note the complete alarm text including any axis, channel, or block number values. 2. Check for related alarms active simultaneously in the SINUMERIK alarm list. 3. Power cycle the machine to clear transient faults. 4. Review the SINUMERIK machine data for parameters related to the alarm. 5. Consult the Siemens SINUMERIK alarm manual for alarm 62318 detailed remedy.

axismd.ai

Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 62318

Siemens 840D 62318 - Channel Block: Tolerance of the rotary axis vector exceeded

Alarm 62318 is triggered during CYCLE996 execution when the rotary axis vector tolerance threshold is violated, indicating the programmed rotary axis position deviates beyond the acceptable tolerance band defined in the machine data. This typically occurs in 5-axis simultaneous interpolation or spatial rotation cycles where rotary axis synchronization with linear axes is critical.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

62318

Siemens 840D 62318 - Channel Block: Tolerance of the rotary axis vector exceeded

Channel Block: Tolerance of the rotary axis vector exceeded

Root Cause Summary

Alarm 62318 is triggered during CYCLE996 execution when the rotary axis vector tolerance threshold is violated, indicating the programmed rotary axis position deviates beyond the acceptable tolerance band defined in the machine data. This typically occurs in 5-axis simultaneous interpolation or spatial rotation cycles where rotary axis synchronization with linear axes is critical.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Access Diagnostics > Machine Data > Axis-Specific > Check MD33300 (tolerance value in degrees or mm). Compare current setting to factory defaults documented in the machine manual. Typical range: 0.1° to 1.0° for rotary axes.
Do not modify MD parameters while cycle execution is in progress; stop the program first.
2
Monitor actual vs. commanded rotary axis position in Diagnostics > Real-time Values > Axis Status. During CYCLE996 replay, observe the deviation magnitude to determine if tolerance is physically achievable with current servo gains.
3
Increase MD33300 / MD33301 incrementally by 0.05° intervals and retry CYCLE996. If alarm clears, servo performance is adequate but tolerance was too tight. If alarm persists, proceed to next cause block.

Service Recommended confidence

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.