Sync error

What does 1C33:20 mean?

This Read-Only BOOLEAN object indicates a synchronization error related to the EtherCAT Distributed Clocks (DC) system or SyncManager (SM) events for the Beckhoff EL7201-000x and EL7211-000x EtherCAT Terminals. It reflects the status of object 0x1C32:32, where a TRUE value signifies an active synchronization fault.

• Incorrect configuration of the EtherCAT master's synchronization mode (e.g., attempting DC-Synchron without proper setup or parameterization for the EL7201-000x/EL7211-000x terminal).
• Significant deviations or instability in the EtherCAT network's distributed clock timing, potentially caused by environmental factors, master clock drift, or insufficient network jitter compensation.
• Frequent missing of SyncManager events or consistent exceeding of configured cycle times, which can be diagnosed by monitoring objects such as 0x1C33:0B (SM event missed counter) or 0x1C33:0C (Cycle exceeded counter).
• Intermittent or sustained communication path instability within the EtherCAT network, possibly due to damaged cabling, loose connections, or excessive electromagnetic interference affecting the EL7201-000x/EL7211-000x terminal.

Click steps to track your progress.

1. 1

   Verify the EtherCAT master's configuration for the EL7201-000x/EL7211-000x terminals, ensuring the selected synchronization mode (e.g., FreeRun, SM-Synchron, DC-Synchron) is appropriate for the application and correctly parameterized.

2. 2

   Perform a thorough inspection of all EtherCAT network cables and connectors associated with the EL7201-000x/EL7211-000x terminal for signs of damage, proper shielding, secure connections, and correct port assignments.

3. 3

   Access and monitor EtherCAT objects 0x1C33:0B (SM event missed counter) and 0x1C33:0C (Cycle exceeded counter) for the EL7201-000x/EL7211-000x terminal; increasing counts indicate a recurring synchronization problem.

4. 4

   Consult the EtherCAT master's diagnostic interface, event log, or error history for any additional messages or details that might specify the nature or source of the synchronization error affecting the EL7201-000x/EL7211-000x terminal.

5. 5

   If the application utilizes DC-Synchron mode, review the "DC" tab (Distributed Clocks) in the TwinCAT configuration for the EL7201-000x/EL7211-000x terminal, adjusting advanced settings or distributed clock parameters to improve timing stability if necessary.