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EO1-11113
4) Checking Backup Data
• The master terminal (M) sends the version request command to the backup master termi-
nal (BM) every certain period of time and receives version information about the backup
data.
• The master terminal (M) checks correspondence between the version information received
from the backup master terminal (BM) and the center files (stored in the M). If an abnor-
mality is found, the backup error flag is turned on.
• When a master job is being performed on the master terminal (M) ([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 (M) and the
backup data stored in the backup master terminal (BM), the master terminal (M) turns on
the backup error flag of the file in which a difference was found.
• There are following four cases when the backup error flag is turned on.
The master terminal (M) changes the programming of the center files.
A version error is found at the backup data check.
The backup job fails after the center file has been downloaded from the PC.
Updating of the backup data fails after the center files have been reset.
• While the backup error flag is on, the following operation is performed.
The master terminal (M) gives a short beep at the timing when the long receipt is
printed to warn that a backup error has occurred.
The RTR declaration cancel operation results in compulsory manual data copy error.
(The error indication “PLEASE BACK UP” is displayed.)
In this case, the RTR declaration is not canceled until the manual data copy operation
is performed.
• There are two timings cases the backup error flag is turned off.
The backup data is properly backed up according to the backup data update process.
The backup master terminal (ID No. 2) is deleted from the terminal connection table.
M
BM
Version request
Version data