Precautions - Mitsubishi Electric MELSEC iQ-R Series User Manual

Precautions

Processing of reading/writing files
Processing of reading/writing files is executed in the background processing of the motion system. Reading/Writing time is
changed depending on the file size and the details of the background processing.
Power OFF at file operation (including reset)
While file operation excluding data reading, if the software is reset or the power of the Motion module is turned OFF or reset,
the file contents are not guaranteed. To prevent data damage, turn OFF the power (including reset) after the file operation is
completed.
Check the consistency of the file system at the module initialization (at inserting a card for an SD memory card). It may take
time to check when there are many files in the drive.
Access to the same file at the same time
When the following operations are performed via engineering tool or SLMP, an error occurs. Execute the next access after the
processing of one request source is completed.
• Execute access (reading/writing) from another request source to the file which is being writing.
• Execute writing from another request source to the file which is being accessing (reading/writing).
Access to the different files from multiple request sources at the same time
• Access to the different files from multiple request sources at the same time is up to 16 files.
19 FILE CONTROL
504
19.1 Memory and File