Panasonic FP0H User Manual page 45

 Flow of Logging Operation
Step (1) Startup of logging operation
• The logging operation is started by any of the following methods; Tool software operation,
Instruction in a user program, and Autostart setting.
Step (2)-a: Data logging into logging buffer memory (RAM)
• After the startup of logging operation, logging data is executed with a specified condition
once the specified trigger condition (bit device ON, cycle, or time) is met.
• Logged data is stored once in the logging buffer memory (RAM) of the control unit.
Step (2)-b: Data transfer to SD memory card from logging buffer memory (RAM)
• Data is stored in the logging buffer memory (RAM) sequentially, and automatically written to
a file in an SD memory card by the control unit. It cannot be controlled by user programs.
• A LOG folder is created in an SD memory card for the LOG number that a file name is set.
• A file "specified file name (------current------).csv" for saving logging data is created in the
LOG folder.
• After that, the control unit continues saving data into the same file until the file determination
condition is met.
Step (3): Determination of file
• The file is determined when the specified file determination condition (bit device ON, time,
recrod limit) is met.
• The file determination is to rename the file "specified file name (------current------).csv"
created in step (2) after writing all the data stored in the buffer into the SD memory card.
• The time data of the oldest record is added to the specified file name.
Example) When the file name is Sample, and the oldest record was recorded in 12 o'clock
on April 1, 2013, it is saved as "specified file name (130401_120000).csv".
• Once the file is determined, a new file "specified file name (------current------).csv" for saving
the next logged data is created. The logging operation restarts when the logging trigger
condition is met.
Step (4): Stop of logging operation
• The logging operation is stopped by either of instruction in user programs or tool software
operation.
• Once the logging operation stop is requested, all the data in the buffer memory in the control
unit is written into the file in the SD memory card and determined. While the logging
operation is continuing, the records logged so far are saved and the file is determined even if
the specified file determination condition has not been satisfied.
• The time data of the oldest record is added to the specified file name.
4.1 Flow of Logging Operation
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