BACnet defines standardised BackupAndRestoreFile services that let a BMS save and restore the full configuration of a device (parameters, programming, mappings) in case of hardware replacement.
True
BACnet Backup and Restore (Clause 19.1, Backup and Restore Procedure) relies on ReinitializeDevice to start the backup or restore procedure and AtomicReadFile/AtomicWriteFile to transfer the configuration through a File Object. The typical workflow is: the BMS starts a backup, the device serialises its configuration into the File Object, and the BMS downloads the file; on hardware replacement, the new device is installed and its IP remapped, the backup file is uploaded, and the device restores its configuration. The mechanism is essential for B2B maintenance in production environments.
Test the restore on a spare device before a real failure: many manufacturers ship Backup procedures that work flawlessly but Restore procedures that have never been validated against a fresh device.
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