Specification Methods Of The File Register - Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual

4.7.5

Specification methods of the file register

(1) Block switching method
The file register points used are divided and specified in units of 32K points (R0 to R32767).
If multiple blocks are used, the desired block is specified with the block number in the RSET instruction.
Each block has a specification range of R0 to R32767.
(2) Serial number access method
A file register whose size is exceeding 32K points can be specified using consecutive device numbers.
Multiple blocks of a file register can be used as a continuous file register.
This kind of device is expressed as "ZR".
The block numbers and ZR device points that can be specified vary depending on the following.
• Storage location of the file register (
• File register size (
RSET K1
R0 specification
for block 1
MOV D0
R0
RSET K2
R0 specification
for block 2
MOV D0
R0
MOV D0 ZR32768
MOV D0 ZR65536
Page 391, Section 4.7.1)
Page 391, Section 4.7.2)
CHAPTER 4 DEVICES
R0
Block 0
R32767
R0
Block 1
R32767
R0
Block 2
ZR0
(Block 0)
ZR32767
ZR32768
(Block 1)
ZR65535
ZR65536
(Block 2)
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