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MELSEC-Q
10 DEVICES
10.7.4 File register designation method
(1) Block switching format
The block switching format designates the number of file register points in 32k
point (R0 to R32767) units.
If multiple blocks are used, switch to the block No. to be used in the RSET
instruction for further file register settings.
Settings are designated in the R0 to R32767 range for each block.
D0
R0
MOV
Memory card
Block 0
Block 1
Block 2
D0
R0
MOV
R0
R0
R0 designation
for block 1
RSET K1
RSET K2
R0 designation
for block 2
R32767
R32767
R0
(2) Serial number access format
This format is used for designating file register beyond 32k points by device
name.
Multiple blocks of file registers can be used as a continuous file register.
Memory card
(Block 0)
(Block 1)
(Block 2)
ZR32768
ZR65535
ZR0
ZR32767
ZR65536
D0 ZR65536MOV
D0 ZR32768MOV
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