Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 7

[Design Precautions]
WARNING
● Create an interlock circuit which uses reset buttons so that the system does not restart automatically
after executing safety functions and turning off outputs.
● In the case of a communication failure in the network, the status of the error station will be as follows:
(1) All inputs from remote I/O stations are turned off.
(2) All outputs from remote I/O stations are turned off.
Check the communication status information and configure an interlock circuit in the program to
ensure that the entire system will operate safely. Failure to do so may result in an accident due to an
incorrect output or malfunction.
● Outputs may remain on or off due to a failure of the CC-Link IE Field Network remote I/O module (with
safety functions). Configure an external circuit for monitoring output signals that could cause a serious
accident.
[Precautions for using redundant function modules]
● The optical transmitter and receiver of the redundant function module use laser diodes (class 1 in
accordance with IEC 60825-1/JIS C6802). Do not look directly at a laser beam. Doing so may harm
your eyes.
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