Memory Copy With The Engineering Tool - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

• When the control system power supply and the standby system power supply are simultaneously turned on,
the automatic memory copy is not executed.
• The standby system CPU module does not operate in boot operation using an SD memory card, but
operates based on the files copied by the automatic memory copy function. However, when the automatic
memory copy cannot be executed due to a communication error or other causes at power-on or reset of the
standby system CPU module, the standby system CPU module operates with the files transferred by the
boot operation.
Execution procedure
1.
When the operation mode is the separate mode, switch it to the backup mode. ( Page 438 Operation Mode Change)
2.
Turn off and on or reset the standby system CPU module. The system executes the memory copy. During the memory
copy, the MEMORY COPY LEDs of the redundant function modules in both systems flash (at 200ms intervals).
Control system
3.
The standby system CPU module is automatically reset and restarted, and the memory copy is completed. The
MEMORY COPY LEDs of both systems turn off.
Control system

Memory copy with the engineering tool

The following describes the execution procedure of memory copy using the engineering tool.
Execution procedure
1.
Connect the engineering tool to the control system CPU module.
2.
Open the "Redundant Operation" window of the engineering tool.
[Online]  [Redundant PLC Operation]  [Redundant Operation]
3.
Select "Memory Copy" in the "Redundant Operation" window and click [Execute]. During the memory copy, the
MEMORY COPY LEDs of the redundant function modules in both systems flash (at 200ms intervals).
Control system
4.
When the memory copy is completed, the MEMORY COPY LED of the control system turns off and that of the standby
system turns on.
Control system
5.
Turn off and on or reset the standby system CPU module. The MEMORY COPY LED of the standby system turns off.
Control system
Standby system
Standby system
Standby system
Standby system
Standby system
28.4 Memory Copy from Control System to Standby System
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28 FUNCTIONS
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