Chapter 3 Memory Configuration Of The Cpu Module; Memory Configuration - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

3
MEMORY CONFIGURATION OF THE CPU
MODULE
3.1

Memory Configuration

The following shows the memory configuration of the CPU module.
*1 The built-in memory is a generic term of the memory built in the CPU module.
*2 The R00CPU, R01CPU, and R02CPU retain the data in each device/label with latch setting without a battery during power failure. (
Page 387 Latch with Battery)
The other programmable controller CPUs retain the data in each device/label with latch setting without a battery during power failure by
inserting a battery-less option cassette to the CPU module. ( Page 394 Latch with Battery-less Option Cassette)
*3 This memory can be used in the R04CPU, R08CPU, R16CPU, R32CPU, R120CPU, R04ENCPU, R08ENCPU, R16ENCPU,
R32ENCPU, and R120ENCPU.
*4 An SD memory card cannot be used in the R00CPU.
• The usage of the memory can be checked from the engineering tool. ( GX Works3 Operating Manual)
• The number of writes for the program memory and data memory is limited to 100000 times. When using the
function that the target file is written, pay attention to the number of writes. (File types and storage
memory) The current number of writes for the program memory and data memory can be checked in the
special register (SD630/SD631 and SD634/SD635). ( Page 853 Drive information)
3 MEMORY CONFIGURATION OF THE CPU MODULE
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3.1 Memory Configuration
Built-in memory
RAM
Program cache memory
*2
Device/label memory
*3
Function memory
Refresh memory
CPU buffer memory
Signal flow memory
SD memory card
*1
ROM
Program memory
Data memory
*4