Mitsubishi Electric MELSEC iQ-R Series - File Size Unit in Memory

10 MEMORY CONFIGURATION OF THE CPU MODULE
10.2 File Size Unit in Memory
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10.2 File Size Unit in Memory
The minimum unit of capacity for storing a file in the memory is referred to as the file size unit (cluster size).
File size unit based on memory area
*1 The file size unit (cluster size) differs depending on the firmware version and production information of the CPU module. ( Page 747
Added and Enhanced Functions)
Data is written in the unit of the file size (cluster size). For example, when 464 bytes of CPU parameter is
written to the data memory on the R08PCPU, it is written as 2048 bytes of data because the file size unit of
the data memory is 2048 bytes.
File size unit of each SD memory card
CPU module File size unit
Program memory Device/label memory Data memory
R08PCPU 128 bytes 512 bytes 2048 bytes
R16PCPU 4096 bytes
R32PCPU 8192 bytes
R120PCPU 16384 bytes
SD memory card File size unit
NZ1MEM-2GBSD 32K bytes
NZ1MEM-4GBSD
NZ1MEM-8GBSD
NZ1MEM-16GBSD