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9. BACKUP FUNCTION EO1-11152
9. BACKUP FUNCTION
9- 2
(2) Procedure
1) Changing Program Data (DLL from the PC)
• When various center files from the PC are received via DLL, the Master Terminal backs up program data
and sales data of the Backup Master Terminal automatically and sends the result to the PC.
2) Changing Program Data (Operated on the Master Terminal)
• When various center files are being programmed on the Master Terminal, the backup error flag of the
relevant file is turned on. (At this time, backup data is not updated.)
* For details about the backup error flag, refer to 5) Backup Error Flag.
* For an explanation of the backup data update process, refer to 6) Backup Data Update Process.
3) Updating Sales Data
• For details about updating sales data, refer to the explanation of each of the control functions described in
Chapter 7.
4) Checking Backup Data
• The Master Terminal sends the version request command to the Backup Master Terminal every certain
period of time and receives version information about the backup data.
• The Master Terminal checks correspondence between the version information received from the Backup
Master Terminal and the center files (stored in the Master). If an abnormality is found, the backup error
flag is turned on.
• When a master job is being performed on the Master Terminal ([RTR] key turned on), or a PC job is being
performed backup data is not checked.
5) Backup Error Flag
• When there is any difference between the data stored in the Master Terminal and the backup data stored
in the Backup Master Terminal, the Master Terminal turns on the backup error flag of the file in which a
difference was found.
• There are following five cases when the backup error flag is turned on.
1. The Master Terminal changes the programming of the center files.
2. A version error is found at the backup data check.
3. The backup job fails after the center file has been downloaded from the PC.
4. Updating of the backup data fails after the center files have been reset.
5. Mergence of backup data is not correctly performed by PLU merge operation
(when the feature “PLU to be inquired” is selected).
DLL Data
Response
Backup Data
Response
PC M BM
M
P
rogramming
O
peration
Version Request
Version Data
MBM