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21 DEVICES
21.5 Index Registers (Z/LZ)
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21.5 Index Registers (Z/LZ)
Device used for indexing of devices.
Types of index registers
There are 2 types: the index register (Z) and long index register (LZ)
Index register (Z)
Used for 16-bit index modification.
Long index register (LZ)
Used for 32-bit index modification.
Index register setting
A total of 24 words can be used for index register (Z) and long index register (LZ). The number of points can be changed by
parameter.
Navigation window [Parameter] [FX5UCPU] [CPU Parameter] "Memory/Device Setting" "Index Register
Setting"
Window
Displayed items
Item Description Setting range Default
Total Points Show the total number of points for index register and long index register.
Index Register (Z) Set the number of points for index registers. 0 to 24 points (2 point unit) 20 points
Long Index Register (LZ) Set the number of points for long index registers. 0 to 12 points (1 point unit) 2 points
MOV K100 Z0
INC Z0
MOV W0 D0Z0
SM402
M10
Access D0Z0 = D100.
DMOV K50000 LZ0
DINC LZ0
MOV D0 U1\G0LZ0
SM402
M10
Access U1\G0LZ0 = U1\G50000.