Mitsubishi MELSEC Q series User Manual page 78

(17)When the CPU module is locked with a security key
No device comment can be output to the data logging file.
(18)Disabling the addition of character string by the data logging file name
addition instruction when the data logging is registered
When the data logging is registered by writing of data logging setting of the target setting number after the data
logging file name addition instruction (SP.LOGFILES instruction) is executed, addition of a character string
executed by this instruction is disabled. (The bits corresponding to the setting numbers of SD710 to SD712 are
turned off.) Therefore, execute the instruction again when adding a character string. ( Page 177, Section 11.3
(3))
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