28 FUNCTIONS
28.4 Memory Copy from Control System to Standby System
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Files copied by the memory copy function
The following table lists the files to be copied by the memory copy function.
: Memory copy possible, : Memory copy not possible, : Storage not possible
When the memory copy is executed, files are copied after the memory of the standby system that has
differences is initialized. ( Page 474 Automatic memory initialization)
The memory copy cannot be executed to the files such as event history and those files are deleted from the
memory of the standby system CPU module. Back up the files before executing the memory copy as required.
■When the security key authentication function is used
The security key of the CPU module is not copied to the standby system. Write the security key from the personal computer
where the security key is registered again after completion of the memory copy.
If the memory copy is executed when the security key is written in the CPU module, program files and their security keys are
copied but the security key of the CPU module is not copied. Starting up the CPU module without re-writing of the security key
causes an error of the CPU module because the security keys do not match between those program files and the CPU
module.
If the security key of the CPU module is written in an extended SRAM cassette, the replaced CPU module can
take over the security key by simply replacing the extended SRAM cassette at replacement of the CPU
module. In this case, re-writing of the security key after completion of the memory copy is not required.
File type Copy
CPU built-in memory SD memory card
Program memory Device/label
memory
Data memory
Program
FB file
CPU parameter
System parameter
Module parameter
Module extension parameter
Module-specific backup parameter
Memory card parameter
Device comment
Initial device value
Global label setting file
Initial label value file Initial global label value file
Initial local label value file
File register
Event history
Device data storage file
General-purpose data
Data logging setting file Common setting file
Individual setting file
Remote password
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