Mitsubishi Electric MELSEC iQ-R Series User Manual page 11

[Operating Precautions]
CAUTION
● When changing data and operating status, and modifying program of the running programmable
controller from an external device such as a personal computer connected to an intelligent function
module, read relevant manuals carefully and ensure the safety before operation. Incorrect change or
modification may cause system malfunction, damage to the machines, or accidents.
● Do not power off the programmable controller or reset the CPU module while the setting values in the
buffer memory are being written to the flash ROM in the module. Doing so will make the data in the
flash ROM and SD memory card undefined. The values need to be set in the buffer memory and
written to the flash ROM and SD memory card again. Doing so can cause malfunction or failure of the
module.
9