Specifications

4-50
4.6 Index Setting
(4) Applying index settings to extended data registers (D) and extended link registers (W)
(for Universal model QCPU (excluding Q00UJCPU), and LCPU)
As an index setting can be applied to internal user devices, data registers (D) and link
registers (W), the device specification by the index setting can be used within the range of
extended data registers (D) and extended link registers (W).
1) Index settings that cross internal user devices and extended data registers (D)/
extended link registers (W)
An index setting that crosses internal user devices and extended data registers
(D)/extended link registers (W) cannot be applied. If the device range check is
enabled at the index setting, an error occurs. (Error code: 4101)
User program
D device image
Internal user
device
Extended data
register
Z0 = 0
D100
D1100
D20000
D22000
Z0 = 1000
Z1 = 0
Z1 = 2000
The index setting applied to
the extended data register
The index setting applied to
the internal user device
MOV
EN ENO
ds
D100Z01234
MOV
EN ENO
ds
D20000Z11234
User program
D device image
Internal user device
Extended data registe
r
MOV
EN ENO
ds
D100Z01234
Z0=0
Z0=20000
D100
D20100
The index setting applied to
the internal user device
The index setting that crosses
internal user device and extended
data register cannot be applied.