Mitsubishi Electric MELSEC Q Series Programming Manual page 64

■Specifying a 32-bit index setting using 'ZZ'
A 32-bit index can be specified to the index register by specifying an index using 'ZZ', for instance, 'ZR0ZZ4'.
The following figure shows the 32-bit index setting using 'ZZ'.
M0
DMOVP
EN
K100000 s
M0
EN
K100 s
• Specification method
When specifying a 32-bit index setting using 'ZZ', select "Use ZZ" in the "Indexing Setting for ZR Device" setting in the
"Device" tab of the PLC parameter.
• Devices that can be used for the index setting
Only the following devices can be used for index settings.
Device
ZR
D
W
*1
M
*1
B
*1
D
*1
W
*1
Jn\B
*1
Jn\W
*1 The devices can be used for the High-speed Universal model QCPU and Universal model Process CPU only.
• Usage range of index registers
The following table shows the usage range of index registers when specifying 32-bit index setting using 'ZZ'.
When specifying a 32-bit index setting using 'ZZ', specify a device as a form of ZRmZZn.
The device number of ZRm is indexed with 32 bits (Zn, Zn+1) by specifying ZRmZZn.
*2
'ZZ'
ZZ0
ZZ1
ZZ2
ZZ3
ZZ4
ZZ5
ZZ6
ZZ7
ZZ8
ZZ9
*2  Indicates the device name (ZR, D, W) to be indexed
4 PROGRAM CONFIGURATION
62
4.6 Index Setting
Set 100000 to Z4 and Z5.
ENO
d Z4
MOVP
Set 32-bit (Z4, Z5) index to ZR.
ENO
ZR(0+100000) indicates ZR100000.
d ZR0ZZ4
Description
Serial number access file register
Extended data register
Extended link register
Internal relay
Link relay
Data register
Link register
Link relay
Link register
Index register
Z0, Z1
Z1, Z2
Z2, Z3
Z3, Z4
Z4, Z5
Z5, Z6
Z6, Z7
Z7, Z8
Z8, Z9
Z9, Z10
*2
'ZZ' Index register
ZZ10 Z10, Z11
ZZ11 Z11, Z12
ZZ12 Z12, Z13
ZZ13 Z13, Z14
ZZ14 Z14, Z15
ZZ15 Z15, Z16
ZZ16 Z16, Z17
ZZ17 Z17, Z18
ZZ18 Z18, Z19
ZZ19 Not applicable