Memory Copy From Control System To Standby System - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

37.3
Memory Copy from Control System to Standby
System
This function transfers data such as parameters and programs in the CPU module of the control system to the CPU module of
the standby system to maintain the consistency of the memory in the two CPU modules.
Ex.
Replacement of the standby system CPU module using the memory copy
(1) Remove the standby system CPU module.
(2) Mount a new CPU module.
(3) Execute the memory copy to match the memory contents of the control system CPU module and the standby system CPU module.
The following memories are available for the memory copy.
• Program memory
• Device/label memory (copying only the file area of file register)
• Data memory (copying only the files in the system folder ($MELPRJ$))
• SD memory card (copying only the files in the system folder ($MELPRJ$))
• System memory (copying only the user management information file)
For the CPU built-in memory, the memory copy is executed regardless of whether or not there are differences between the
control system and standby system. For the SD memory card, the memory copy is executed only when there are differences
between the control system and standby system.
For the module replacement method and maintenance procedure using the memory copy, refer to the
following.
Page 697 Module Replacement in a System Using the SIL2 Process CPU
(1)
(3)
(2)

37.3 Memory Copy from Control System to Standby System

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37 FUNCTIONS
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