Device For Which Index Modification Can Be Performed; Index Register Setting - Mitsubishi Electric MELSEC iQ-R Series User Manual

Device for which index modification can be performed

The following table lists the devices that can be targeted for index modification.
Item Description
16-bit index modification X, DX, Y, DY, M, L, B, F, SB, V, S
Un\G, U3En\G, U3En\HG, R, ZR, RD, P
32-bit index modification M, B, SB, T
*1 The devices can be used for the contact, coil and current value.
*2 For network numbers and the specification source of I/O numbers, 32-bit index modification cannot be performed.
*3 When the devices are used as an interrupt pointer, index modification cannot be performed.
*4 Before specifying, check the versions of the CPU module and engineering tool used. ( Page 747 Added and Enhanced Functions)

Index register setting

The following window allows to specify the number of points for the index register (Z) and long index register (LZ) and the
range where they are used as a local device. The total number of points of the index register (Z) and the long index register
(LZ) must be set to 24 words.
[CPU Parameter]  [Memory/Device Setting]  [Index Register Setting]
Window
Displayed items
Item
Number of Total Points
points
setting
Index register (Z)
Long index register (LZ)
Local Number of Local Index register (Z)
setting points
setting
Local long index register (LZ)
Head Index register (Z)
Long index register (LZ)
*4 *1 *1 *1
, T , LT , ST
*3 *3
, I , BL
*1 *1 *1 *1 *1 *1
, LT , ST , LST , C , LC , D, W, SW, Jn\B
Description
Check the total number of points for index register and
long index register.
Set the number of points for the index registers.
Set the number of points for the long index registers.
Set the number of points for index registers used as a
local device. Set within the range of the index register.
Set the number of points for long index registers used as
a local device. Set within the range of the long index
register.
Set the start number for the local index registers. Set
within the range of the index register.
Set the start number for the local long index registers.
Set within the range of the long index register.
*1 *1 *1
, LST , C , LC , D, W, SW, SM, SD, Jn\X, Jn\Y, Jn\B, Jn\SB, Jn\W, Jn\SW,
*4 *4
, BLn\S , J, U, K, H
*2 *2 *2
, Jn\W , Un\G , U3En\G
*2 *2
, U3En\HG , R, ZR, RD, K, H
Setting range Default
 
0 to 24 points (in 20 points
two-point
increments)
0 to 12 points (in 2 points
one-point
increments)
0 to 24 points (in 0 points
one-point
increments)
0 to 12 points (in 0 points
one-point
increments)
0 to 23 0
0 to 11 0
27 DEVICES
27.8 Index Register (Z/LZ)
27
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