Issue
After 2000 backups an attempt to perform a backup to flash results in the error 'Flash backup for this controller has been disabled.'
Product Line
EcoStruxure Building Operation, Andover Continuum
Environment
- b3 controller
- i2 controller
Cause
Flash memory has a limited write count; Controllers implement a flash circuit breaker that trips after 2000 backup operations in order to protect the flash device from damage.
Resolution
(Applies to all b3 and i2 controllers)
EcoStruxure Building Operation
In EBO, a command has been added that will re-enable backup to flash after the circuit breaker has been tripped (2000 backups)
- From Workstation, in the object tree, right-click the i2/b3 device.
- From the context menu select, DEVICE->ENABLE BACKUP TO FLASH
Andover Continuum
From CyberStation command line set the ACCStatusBackup system variable of the device to ACCBackupEnable.
NOTE:
The flash circuit breaker CANNOT be reset from Script/Plain English. This is by design as it was deemed too risky to allow resetting it programmatically. A poorly written program could very quickly cause damage to the flash device.
