Cpu Module Change Function With Sd Memory Card - Mitsubishi Electric L02SCPU User's Manual And Reference

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CPU Module Change Function with SD Memory Card

Remark
The L02SCPU and L02SCPU-P do not support this function.
This function enables to pass data from a module to be changed (disconnected) to the newly-connected CPU module.
By using this function, control can be continued after replacing a CPU module. To pass data, backup the data to an SD
memory card before replacing a CPU module, and restore them in the newly-connected CPU module before replacing
a CPU module.
(1) Backup data file
Only one backup data file can be stored to an SD memory card. If any backup data file exists in the SD memory
card, the file data are overwritten.
To delete the backup data file, select "Delete PLC Data..." of a programming tool.
(2) Backup data
(a) Backup data selection
Select a drive to back up from the following table.
Backup data (drive)
Program memory (drive 0)
Standard RAM (drive 3)
Standard ROM (drive 4)
*2
Device data
System data
*1 Data in the program cache memory are backed up.
*2 Latch devices or devices set in the latch range are backed up.
182
SD memory card for storing backup data
Programming tool
All data in the program memory (drive 0)
All data in the program memory (drive 3)
All data in the program memory (drive 4)
Internal user device (L, B, F, V, T, ST, C, D, W)
Data managed by the system (such as module error history)
1) Back up data to
a SD memory card.
3) Restore backup
data.
2) Change the CPU
module.
Description
*1
LCPU
Program memory
Standard RAM
Standard RAM
Device data
System data
Backup by user
Allowed
Not allowed (backed up by the system)