Back up and restore BACnet ObjectIDs with snapshot
These instructions serve as a workflow for writing BACnet ObjectIDs from a SymbolExplorer snapshot back into a PLC.
Restoring object instance IDs is necessary if, for example, a controller that is already communicating with a BACnet MBE is replaced.
Back up IDs:
- 1. Login with the SymbolExplorer.
- 2. Create snapshot
Start the SymbolExplorer and connect it to a controller. Click on the Take Snapshot button in the Online window to create a snapshot.
Sekect the storage location for the snapshot file.
- Once you have selected the folder and confirmed with OK, all values of the symbols in the list are synchronized with the PLC and written to the file.
Restore IDs from a snapshot in the target system:
Start in XAE
- 1. PLC Reset origin
- 2. Log in PLC
- 3. Do not start the PLC!
SymbolExplorer
- 1. Open the snapshot with the data backup of the affected target system (PLC).
- 2. Log in to the target system in the Symbol Explorer
- 3. Synchronize the data from the snapshot to the target system
- The symbols for synchronization are displayed in the dialog box and prepared for transfer to the target system.
- 4. Write the symbols from the snapshot to the PLC using the SymbolExplorer.
Checking in the XAE
- 1. Write the Init mode from the BACnet server in the PLC to eInitReset.
- 2. Start the PLC.
- The BACnet server starts in eInitMode and recreates the objects.
