Mitsubishi Electric MELSEC iQ-R Series - Switching to a Storage File

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20 DATA LOGGING FUNCTION
20.8 Steps Until the Collected Data Is Saved
Switching to a storage file
The data collected by data logging is temporarily stored in a stack file. The stack file can be switched to a storage file to free
the space in the SD memory card.
How file switching works
File switching works as follows:
1. The CPU module writes collected data into a stack file (such as LOG01.BIN).
2. It changes the file name when the storage file switching condition is met.
* 1*2
3. It creates a new stack file.
4. It continues to write collected data into the newly created stack file.
*1 The file name format can be customized. ( CPU Module Logging Configuration Tool Version 1 Operating Manual (MELSEC iQ-R
Series))
*2 The file number of the most recent storage file is stored in the special register (Latest storage file number).
LOG01.BIN
LOG01.BIN LOG01_00000001.BIN
:
:
Stack file
Device data collection
Stack file
Device data collection
Storage file
File switching
CPU module
CPU module