Mitsubishi Electric MELSEC iQ-R Series User Manual page 305

CPU module operation when registering the data logging
Note that the operating status of the CPU module is not changed until the following data logging registration or data save
processing is completed. (The operating status may not be switched to STOP immediately.)
• While saving the data in the internal buffer by changing the operating status of the CPU module from RUN to STOP or
operation to stop/pause data logging from CPU Module Logging Configuration Tool
• When the multiple data logging settings are started at the same time (when the multiple data loggings are registered again
at the same time)
• When the data logging is started with any unused folders remaining in the storage memory
The waiting time for the operation status change of the CPU module is shortened by reducing the number of data logging
settings and deleting unused folders.
Unicode text file
To view the data, use a software application with Unicode support. The data may be displayed incorrectly in a software
application with no Unicode support. To open a Unicode text file with multiple lines of comments in Microsoft
to drag and drop the file on the Microsoft

Microsoft Excel.
Registration of the available devices
■User device, system device, file register, and index register
The data logging settings can be registered when devices of the CPU module exist. When a device number outside the range
is specified, an error occurs at the registration.
■Module access device (buffer memory) and link direct device
The data logging settings can be registered when the buffer memory and devices of the target module exist. When the target
module is not mounted or a device number outside the range is specified even with the target module mounted, an error
occurs at the registration.
■File register in which "Use File Register of Each Program" is set
The program name cannot be specified for the following devices.
• File register in which "Use File Register of Each Program" is set
To perform data logging of the above devices, transfer the data of the above devices to the global device on the program
using the engineering tool beforehand.
For the data logging device, specify the global device where the data is transferred. The data to be logged is the data
specified in the data collection condition.
File operation during execution of data logging
This section describes file operation during execution of data logging.
Target file
Data logging setting file
Data Logging File

Excel window; otherwise, the content of the file may be displayed incorrectly in
File operation Behavior
Write During execution of data logging, it is not possible to write/delete data to/in the data logging setting
file being used.
Delete
Initialize During execution of data logging, it is not possible to initialize the memory storing the data logging
setting file being executed.
Folder delete Folders cannot be deleted from the $MELPRJ$ folder in which the data logging setting file is
stored.
Write During execution of data logging, it is not possible to write/delete data to/in and delete folders from
the data logging setting file being used.
Delete
Folder delete
Initialize During execution of data logging, it is not possible to initialize the memory storing the data logging
setting file being executed.
20.16 Precautions to Take When Using the Data Logging Function
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Excel, be sure
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