Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 596

Enabling the modules
1.
Safety module operation
Check that the systems on the SIL2 Process CPU side and remote head module side are powered on, and then enable the
modules set to SIL2 mode with the "Safety Module Operation" of the engineering tool. ( Manual for the intelligent function
module used,  Manual for the I/O module used)
2.
Powering off the systems
After enabling the modules, power off the systems on the SIL2 Process CPU side and remote head module side.
3.
Restarting the systems
Set the RUN/STOP/RESET switch of the SIL2 Process CPU and remote head module in both systems to the RUN position
and power on the systems.
Procedure for checking the operation
1.
Checking the operation
Check each module status and program operation used in the systems.
• Check if an error has occurred in each module.
• Check that the LEDs of each module are in the following states.
• Control system
*1
• Standby system
• Remote head module side
*1 In a redundant master station system, the MST LED of the master/local module in the standby system flashes.
*2 In a redundant master station system, the following LEDs are always off since a redundant configuration is not made for the remote
head module.
 CTRL LED
 SBY LED
*3 The input module with diagnostic functions is used as an example. For the LEDs of other modules, refer to the manual for the module
used.
• Check if an error occurs in the CC-Link IE Field Network diagnostics. ( MELSEC iQ-R CC-Link IE Field Network User's
Manual (Application))
36 PROCEDURE FOR STARTING UP A SYSTEM USING THE SIL2 PROCESS CPU
594
36.1 Overview
*2*3