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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 30-45 minutes
Siemens 840D 4113 - Sysclock cycle changed to ms
MD 10050 SYSCLOCK_CYCLE_TIME has been modified on systems with PROFIBUS DP because of the modified DP cycle in SDB-Type-2000.
4113
Siemens 840D 4113 - Sysclock cycle changed to ms
Sysclock cycle changed to ms
MD 10050 SYSCLOCK_CYCLE_TIME has been modified on systems with PROFIBUS DP because of the modified DP cycle in SDB-Type-2000.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Common Causes
- PROFIBUS DP cycle time was modified in the slave data block (SDB-Type-2000) without corresponding update to MD 10050
- Automatic sysclock adjustment triggered by DP cycle change detection during system startup or parameter download
- Mismatch between configured PROFIBUS DP master cycle and slave device cycle requirements
- Parameter synchronization failure between PROFIBUS configuration and machine data settings
Troubleshooting Steps
- 1Verify the new sysclock cycle time value (%1) matches your intended PROFIBUS DP cycle configuration in the SDB-Type-2000 block
- 2Compare current MD 10050 SYSCLOCK_CYCLE_TIME value against PROFIBUS DP cycle settings in your hardware configuration tool
- 3Review recent changes to PROFIBUS DP slave data blocks and re-download the complete configuration to ensure synchronization
- 4Check PROFIBUS DP diagnostics for cycle time conflicts or timing violations between master and slave devices
- 5If the new sysclock value is incorrect, restore the intended MD 10050 value and update the SDB-Type-2000 DP cycle to match, then perform a complete parameter download and cold restart
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