Output Description

xDone

Data_Type	Default_Value	Range	Unit
BOOL	-	-	-

If Output xDone changes to TRUE, the Function Block has finished its processing without an error and all other outputs become valid.

xDone

Data_Type	Default_Value	Range	Unit
BOOL	-	-	-

If Output xDone changes to TRUE, the Function Block has finished its processing without an error and all other outputs become valid.

xBusy

Data_Type	Default_Value	Range	Unit
BOOL	-	-	-

Output xBusy signals if a Function Block has been triggered and is TRUE as long it is processing.

xError

Data_Type	Default_Value	Range	Unit
BOOL	-	-	-

Output xError is set if the Function Block finished and an error occurred during the Function Block processing. If xError is TRUE the error code can be read from output eError.

eError

Data_Type	Default_Value	Range	Unit
FILE_ERROR	-	-	-

Output eError is set if an error occurred during the Function Block processing. For error codes, see Error Messages of the CAA_File Function Blocks Error Messages.

dcDiskStatus

Data_Type	Default_Value	Range	Unit
FILE_DISK_STATUS	-	-	-

Output dcDiskStatus contains all available information about the storage device:

Free, used and total available space on the device, block size, cluster size, total cluster count and the device condition. The meaning of the decive conditions DC_GREEN, DC_YELLOW, DC_RED is storage device specific as shown in the following table:

state	userdisk	flashdisk	sramdisk	sdcard
GREEN	userdisk ready	flashdisk ready	sramdisk ready	sdcard ready
YELLOW	-	threshold exceeded	-	-
RED	userdisk not ready	flashdisk is read only	sramdisk not ready	sdcard not ready

Note

To optimize the usage of a storage device try to fit your read/write operation’s sizes and file sizes with the device’s block and/or cluster sizes.

See also AC500 CPU Storage Devices for hints on memory location maintenance.