Using the ACCStatusFlash System Variable
A system variable called ACCStatusFlash is automatically created
when the controller is defined.
The ACCStatusFlash system variable indicates the current state
(empty, valid or failure) of the Flash memory device. The controller
stores status information into this variable.
ACCStatusFlash can have the following values:
z
ACCFlashEmpty — There is no database in Flash memory.
z
ACCFlashValid — There is a valid database in Flash memory.
z
ACCFlashFailure — An error was encountered while trying to
perform a backup to Flash memory. In this state, the data in Flash
memory is unusable.
Using the ACCStatusBackup System Variable
The ACCStatusBackup system variable indicates the operational state
(backup needed, backup done, backup in progress, etc.) of the memory.
It is also used to initiate a backup operation. The controller stores
status information into this variable and the user initiates a manual
backup operation through this variable.
Note: To command a flash backup, PE programs use the above system
variable, while end-users would use the CyberStation (v 1.8 or
higher) user interface.
A system variable called ACCStatusBackup is automatically created
when the controller is defined.
ACCStatusBackup, when used as an indicator, can have the following
values:
z
ACCBackupDone — A backup to Flash memory has been
successfully completed, or the controller has not been configured, or
after a cold start.
z
ACCBackupNeeded — A configuration item has changed value
since the last successful backup to Flash memory.
z
ACCBackupInProgress — A backup operation is underway.
