Mitsubishi Electric MELSEC Q Series Structured Programming Manual page 71

4) Usage range of index registers
The following table lists the usage range of index registers when setting
indexes in 32-bit range.
Since the specified index register (Zn) and next index register (Zn+1) are used
for index setting in 32-bit range, make sure not to overlap index registers being
used.
Setting value Index register
Z0
Z1
Z2
Z3
Z4
Z5
Z6
Z7
Z8
Z9
5) The following figure shows the examples of index setting and their actual
processing devices.
(With the setting of Z0 (32 bits) =100000 and Z2 (32 bits)=-20)
Ladder example
X0
DMOV
EN
K100000
s
DMOV
EN
K-20
s
X1
MOV
EN
ZR1000Z0
s
Figure 4.6-3 Ladder examples and actual processing devices
Setting value
Z0, Z1
Z1, Z2
Z2, Z3
Z3, Z4
Z4, Z5
Z5, Z6
Z6, Z7
Z7, Z8
Z8, Z9
Z9, Z10
ENO
Z0
d
Description
ENO
Z2
d
ENO
D13000Z2
d
Index register
Z10 Z10, Z11
Z11 Z11, Z12
Z12 Z12, Z13
Z13 Z13, Z14
Z14 Z14, Z15
Z15 Z15, Z16
Z16 Z16, Z17
Z17 Z17, Z18
Z18 Z18, Z19
Z19 Not applicable
Actual processing device
X1
MOV
EN ENO
ZR101000 s d
ZR1000Z0 ZR(1000+100000)
D13000Z2 D(30-20) D12980
4.6 Index Setting
4
D12980
ZR101000
4-47