Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 214

26.
Validate the RX40NC6B(S2M) and the RY40PT5B(S2M) to make them usable in the system using the SIL2 Process
CPU.
[Online]  [Safety PLC Operation]  [Safety Module Operation]
27.
Select the checkbox of the RX40NC6B(S2M) and the RY40PT5B(S2M) to be validated, and click the [S MODE LED Start
Flashing] button. Check the flashing of the LEDs on the RX40NC6B(S2M), RX40NC6B(S2S), RY40PT5B(S2M), and
RY40PT5B(S2S) to be validated. Following this step allows you to check whether the target module is set properly
before starting validation.
28.
Check the flashing of the S MODE LEDs on the RX40NC6B (S2M), RX40NC6B (S2S), RY40PT5B (S2M), and
RY40PT5B (S2S), and click the [S MODE LED Stop Flashing] button to stop the S MODE LEDs flashing.
29.
Click the [Enable] button.
30.
Switch the safety operation mode to the SAFETY MODE.
[Online]  [Safety PLC Operation]  [Switch Safety Operation Mode]
3 PROGRAMMING
212
3.5 Communication Example of Safety Communication Function Used in a Redundant Line