Note: The database is available on a read-only basis during the backup
operation. This indicates that the data is being copied to scratch
RAM as the first phase of a backup.
z
ACCBackupDisabled — The database has been saved to Flash
memory 2000 times and the user has attempted further backup
operations without re-setting the Flash Circuit Breaker (see
ACCBackupEnable below). For as long as this condition persists,
further backup operations are disabled.
z
ACCFlashingBackUp — This indicates that the copy-to-RAM
phase of a backup has completed and the scratch RAM is being
copied to Flash. The controller is fully operational during this
phase, which can take several minutes.
ACCStatusBackup, when used to initiate a backup can have the
following values:
z
ACCBackupEnable — This value can only be set from the
command line, not from a Plain English program. This allows you
to override the Flash Circuit Breaker and perform further backup
operations. Further backup operations will be uninhibited until an
additional 2,000 Flash memory write cycles have been incurred.
z
ACCBackupNow — This value can be set from the command line
or from a Plain English program. This causes the system to initiate
a backup of the current database to Flash memory.
Note: These values can only be set from Plain English or the command
line (not the object editor). Be careful if setting this using Plain
English. Remember, there is a maximum number of Flash
memory writes.
Using the ACCFlashWRCount System variable
The ACCFlashWRCount system variable stores a running tally of the
number of times the database has been backed up to Flash memory.
The controller stores the count information into this variable.
A system variable called ACCFlashWRCount is automatically created
when the controller is defined.
