Mitsubishi Electric MELSEC iQ-R Series User Manual page 467

File storage location (SAVFLDNAMEDETLFRMT)
Set a folder name of the data logging file storage location. When this setting is empty (""), the file is saved in the same folder
as the logging setting file.
The file name is the date (YYYYMMDD)_time(hhmmss).extension.
File format (TFFFILE)
The following storage formats are available for data logging files. For details on the output format, format specifications, and
output contents of each file, refer to the data output format.
Page 473 Data Logging Format
File format
CSV (Unicode)
JSON
Number of files to be saved (SAVFNUM)
Set the maximum number of data logging files (Files of the extension specified with "File format") in the storage location
folder.
The setting range of files is 0 to 65535.
When the setting value is greater than or equal to 1, the current number of files is stored in
System.LoggingRef[1..10].Md.LogDataSavedCount. The operation when the number of files exceeds the setting value is
specified by "Operation when exceeds the number of files".
When the setting value is 0, the maximum number of files is not checked. When the logging starts,
System.LoggingRef[1..10].Md.LogDataSavedCount becomes 0, after this the saved number of files is stored.
It may take time to save files if the number of maximum files is large.
Operation when exceeding number of files (SAVFNUMTYPE)
Set the operation when the number of files in the storage location folder exceeds the setting value of "Number of files to be
saved".
Setting
Overwrite
Stop
Number of file switching records (SAVSWICTMNRECNUM)
Sets the number of records to switch a file to be saved during continuous logging.
In trigger logging, since a file to be saved is switched automatically when the trigger is satisfied, this setting is ignored.
Number of buffers (NUMBUFF)
Set the number of internal data collection buffers. When the creation interval of the data logging files is short, and the error
BUSY occurs, increase this setting value. When the setting value is 0, the number of buffers is determined automatically
according to the file creation interval.
For details, refer to the following.
Page 460 Internal buffer
Description
This is a file format which can be opened in generic-purpose application programs such as table calculated software and
GX LogViewer.
This is a file format which is appropriate for data operation on the host system. It can also be opened in GX LogViewer.
Description
When creating the next storage file, the oldest file is deleted, and a new file is created and the logging is continued.
When trying to create the next save file, the error will occur, and the logging operation will be stopped.
15 LOGGING
15.1 Data Logging/Real-Time Monitor
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