Memories Of Q24Dhccpu-Ls And Q26Dhccpu-Ls; Memory Type - Mitsubishi Electric MELSEC Q Series User Manual

18.3

Memories of Q24DHCCPU-LS and Q26DHCCPU-LS

The following describes the available memories in Q24DHCCPU-LS and Q26DHCCPU-LS.
18.3.1

Memory type

The following memories are available.
For the usage methods of each memory, refer to the manual of the partner operating system, or consult the partner
(operating system vendor).
• Internal ROM .................... Page 327, (1) in this section
• Built-in SSD ...................... Page 327, (2) in this section
• Work RAM......................... Page 327, (3) in this section
• Battery backup RAM ......... Page 327, (4) in this section
• SD memory card ............... Page 327, (5) in this section
• USB device ....................... Page 327, (6) in this section
• CPU shared memory ........ Page 328, (7) in this section
• Data refresh memory ........ Page 328, (8) in this section
(1) Internal ROM
A memory that stores parameters.
Use the following functions in Setting/monitoring tools for the C Controller module to read/write parameters.
•
[Online]  [Read from CCPU]/[Write to CCPU]
The initial value is set to parameter by initialization. (Page 62, Section 6.1)
(2) Built-in SSD
A sub memory controlled by the partner operating system.
A memory that stores the partner operating system and user program.
For the life of the built-in SSD, refer to the following.
Page 137, Section 9.5
(3) Work RAM
A main memory controlled by the partner operating system.
A work RAM is a volatile memory for program execution.
(4) Battery backup RAM
A memory that stores data that need to be retained through power OFF among data used by user programs, etc.
(5) SD memory card
A memory card that stores parameters and files such as user programs.
(6) USB device
A device that stores files other than user programs.
CHAPTER 18 MEMORIES AND FILES
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