Chapter 9. File Backup through External Storage Equipment
9-3
(3) The lower directory structure is same as that of logging.
(4) Name of screen image backup file includes hour, minute, second information.
(a) Backup file is created in bitmap format.
(b) File name starts with ‘S’ and includes hour, minute, second, index information.
(c) In case backup file is created at the same time in terms of second, index information at the end of file name increases.
Remark
(1) When changing device time, in case of changing current time into after time, we guarantee the normal operation. But in
case of changing current time into early time, we don’t guarantee the normal operation. In this case, you have to delete
directory including the changed hour and its lower directory for normal operation. For example, if you change time from
December 10
th
to December 5
th
, you have to delete year, month directory created in December 10
th
and restart the device
(2) Sorting by project is not supported for each logging, recipe, screen image. For example, there are no.1, 2, and 3 logging
groups in the project A. And in case each logging group backups the file, 1, 2, 3 directories are created and each data is
saved under each directory. Then, in case file backup occurs in the project B having no.1, 2 logging group, backup file is
created in same directory of project A. In this case, you have to sort the backup files of project A and B based on the
created time.
9.2 Operation setting when there is no Space for Backup
You can designate in the XP-Builder whether to cancel the backup or delete the oldest backup file and execute backup when
there is no space in the storage equipment.
[Project Property Setting -> Storage Settings -> Backup Storage -> Delete old file if disk full]
1. In case of backup, deleting the oldest data
(1) In case there is no space for backup, searches the oldest year, month directory under Logging, Recipe, Screen Image. (But
in case of Logging, finds under Logging number directory. That is, when executing backup about Logging number 2, in
case there is no backup data in Logging number 2 directory and there is data only in logging number 1, data of logging
number 1 is not searched/deleted.)
(2) Searches the oldest day directory under the oldest year, month directory.
(3) Searches the oldest hour directory under the oldest day directory.
(4) Deletes the oldest backup file under the oldest hour directory
(5) Checks the space and if more space is necessary, the above steps of (1) ~ (4) are repeated and checks the space.
(6) When deleting file, in case all data in time directory are deleted, relevant hour directory is deleted.
(7) When deleting hour directory, in case all hour directories in day directory are deleted, relevant hour directory is deleted.
(8) When deleting day directory, in case all day directories in year, month directory are deleted, relevant year, month directory is
deleted.
Remark
(1) In unknown directory or file (user file or directory), searches the oldest thing among normal backup files except unknown
directory or file.
(2) In case there is nothing except user data in now searched directory, backup operation fails. XGT Panel can’t delete user
data, at this point, operation stops.
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