Mitsubishi Electric MELSEC iQ-R Series Safety Manual page 35

Remote register (RWr/RWw) of the safety remote I/O module
System uses 16 points each of the RWr/RWw to communicate with safety remote I/O module. Do not read/write data from/to
the RWr/RWw to be used by the system. Writing data may cause malfunction of the safety programmable controller.
For relationship between the Safety CPU device and remote register, refer to Page 72 Relationship between devices in the
Safety CPU and remote inputs/outputs.
For details, refer to the following.
 CC-Link IE Field Network Remote I/O Module (With Safety Functions) User's Manual
Using the monitor data of the engineering tool
The monitor data to be displayed by the engineering tool should not be used for the operation related to the safety. (For
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example, the operations for the safety such as starting a machine or resetting the stop status should not be performed with
checking the monitor data displayed on the engineering tool).
4 PRECAUTIONS FOR USE OF SAFETY PROGRAMMABLE CONTROLLER
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4.1 Precautions for Designing Safety Application