Mitsubishi Electric MELSEC iQ-R C R12CCPU-V, Руководство пользователя

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3 MEMORY CONFIGURATION OF C Controller Module
3.2 Memory Operation
3.2
Memory Operation
Memory can be initialized and values can be cleared in a C Controller module with CW Configurator.
For details on the memory operation, refer to the following manual.

CW Configurator Operating Manual
*1 The "MELPRJ" folder is created in the data memory, and the default parameters are set.
*2 The "MELPRJ" folder is created.
• If the power is turned OFF or the module is reset while initializing each memory or clearing values, the
memory will be partly initialized or the value is partly cleared. In this case, perform the memory operation
again.
• If the power is turned OFF or the module is reset while accessing each memory, data corruption in the
memory or file system error may occur. Shut down the program memory and data memory with the C
Controller module dedicated function (CCPU_ShutdownRom), and then power OFF or reset the module.
3.3
Memory Life
This section shows the number of writable times (life) of program memory and data memory.
Program memory and data memory life
The life is represented as a write count index value and data can be written until it reaches to 100,000 times. However, since
the system increases the life for writing of program memory and data memory, the write count index value differs from the
actual write count.
If the write count index value exceeds 100,000 times, the following symptoms may occur. Replace the C Controller module.
• Decrease of writing speed to program memory and data memory
• Unable to write data to program memory and data memory
Method for checking write count index value
The write count index value can be acquired with the C Controller module dedicated function (CCPU_GetCpuStatus).
If the value exceeds 100,000 times, it is registered in the event history. (

Page 68 Event history function)
• Since the operation of the program memory and data memory is checked at factory acceptance test, the
initial value of the write count index is not 0.
• Since a C Controller module always checks data in the program memory and data memory, the write count
index value may be increased.
Item Description
Initialization Formatting program memory/data memory Deletes all the folders and files in the program memory and data memory.
*1
Formatting an SD memory card Deletes all the folders and files in an SD memory card.
*2
Clearing
value Device Zero clear Clears devices (X, Y, M, B, D, W) to zero.
File register Clears all the file registers (ZR) to zero.