I. Common Simple Faults (5-15 minutes of recovery)
Physical Layer Faults: IP conflicts, abnormal ports, loose network cables, and so forth. The recovery process can be expedited by replacing the network cable or transitioning to a secondary port.
Protocol Layer Faults: Mismatched security policy configurations, firewall port blocking. The communication will be promptly restored by modifying the configuration.
Service Layer Faults: A minor message queue backlog, synchronisation service process crashes. Recovery will be restored by restarting the service and deleting redundant messages.
II. Medium Complex Faults (30-60 minutes of recovery)
Faults in the Data Mapping Layer: Misaligned point addresses and mismatched data formats. Alignment will be finalised by importing backup configuration files and executing format conversion programs.
Concurrency Timing Faults: Excessive timestamp deviation, synchronisation request congestion. The repair will be finalised by adjusting the upload timing and enabling PTP unified time synchronisation.
Partial Data Loss: A small quantity of RC calibration data is lost. The full data reconciliation will be completed by automatically re-uploading using a resume script.
III. Faults of an Extremely Complex Nature (Recovery Time: 2-4 Hours)
Hardware-level faults: The industrial switch is completely damaged, and the MES server hardware fails. The system is migrated to secondary hardware and recovered in its entirety.
Large-scale data loss: Completion of full synchronisation through multi-threaded concurrent retransmission; a significant backlog of RC calibration data as a consequence of a prolonged interruption of the synchronisation link.
Systemic configuration errors: The full point mapping table has been completely corrupted. Review all RC parameter points and conduct a full-link integration test.
Based on industrial field operation and maintenance experience, the average recovery time is approximately 12 minutes, and over 90% of RC calibration data synchronisation faults can be recovered within 30 minutes.
