Mitsubishi Electric MELSEC iQ-R Series User Manual page 58

13.
Checking the connection of the extension cables
When extension base units at extension level 2 and later are connected, check that the following LEDs are turned on.
• CONNECT LED for the extension cable connected to the extension base unit
• ACTIVE LED on either of the extension base units
14.
Executing the program
Power off both systems. Set the RUN/STOP/RESET switch of the CPU module of each system to the RUN position, and
power on both systems.
Check that the PROGRAM RUN LED of the CPU module in the control system turns on.
If the RUN/STOP/RESET switch of each CPU module is set to the RUN position while the CPU modules are
powered on, a continuation error due to an operating status mismatch is detected in the CPU module of the
standby system. Therefore, to start up both systems simultaneously, performing step 13 is recommended.
15.
Monitoring the program
Check that the program operates normally on the engineering tool. ( Page 68 Monitoring the Program)
5 PROCEDURE FOR STARTING UP A REDUNDANT SYSTEM
56
5.1 Overview