Switching To A Storage File - Mitsubishi Electric MELSEC iQ-R Series User Manual

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.
3.
It creates a new stack file.
4.
It continues to write collected data into the newly created stack file.
CPU module
CPU module
*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).
20 DATA LOGGING FUNCTION
284
20.8 Steps Until the Collected Data Is Saved
Device data collection
File switching
Device data collection
LOG01.BIN
* 1*2
Stack file
:
LOG01.BIN
Stack file Storage file
:
LOG01_00000001.BIN