Mitsubishi Electric MELSEC iQ-R Series User Manual page 58

Up to 256 saved files can be stored in the subfolder. If it exceeds 256 files, the folder is switched.
If the specified number of saved files is less than 255, the folder switching will not occur according to the
number of saved files because the number of saved files does not exceed 256.
When the specified number of saved file is more than 256, the folder switching is determined by the total
number of saved files created in the subfolder.
Therefore, even if 256 saved files do not exist in the subfolder because some saved files have been deleted
due to the excess of the set number of saved files or the SD memory card setting, a folder will be switched
when the saved files are created and the total number of saved files reaches 256.
Precautions
• When the folder names are the same, the folder with sequential numbers from 1 to 16 are created. However, for the folders
having the sequential number after 16, an error occurs and the folder switching is not performed. Configure and adjust the
system so that it does not have the same folder name.
• The file is switched after switching folder, however, when the accumulating files which are to be switched have only header
lines, neither file switching nor folder switching is performed. When switching the folder, configure and adjust the system so
that the folder is switched after data is output to the accumulating file.
■Sequentially numbered folder name when the number of saved files is set to 255 or less
• Since the number of saved files to be stored in a sequentially numbered folder does not exceed 256 when it is set to 255 or
less, the subfolder is not switched and the sequentially numbered folder name is not updated.
Ex.
When the number of saved files is set to 100, and "Add the sequential number" is selected in the saved file name setting
When performing file switching after 100 saved files are created, the oldest saved file is deleted.
LOGGING
File switching
occurrences
LOGGING
The sequentially numbered folders are not switched even if the sequential number added to the saved file exceeds 256.
LOGGING
File switching occurrenc-
LOGGING
1 FUNCTION
56
1.1 Data Logging Function
Setting type
folder
LOG01
LOG01
Setting type
folder
LOG01
es
LOG01
Sequential Saved file with
folder sequential number
00000064.
00000001
00000001.
00000065.
00000001
Sequential Saved file with
folder sequential number
00000100.
00000001
0000009D.
00000101.
00000001
CSV
Delete
CSV
CSV
CSV
Delete
CSV
CSV