Mitsubishi Electric MELSEC Q Series Programming Manual page 62

32-bit index setting
For Universal model QCPU (excluding Q00UJCPU) and LCPU, either of the following two methods can be selected to specify
index registers used for a 32-bit index setting.
• Specify a range of index registers used for a 32-bit index setting.
• Specify a 32-bit index setting using 'ZZ'.
For FXCPU, combine index registers V (from V0) and Z (from Z0) for a 32-bit index setting.
32-bit index settings using 'ZZ' can be used for the following CPU modules only. For the usable programming
tool, refer to the operating manual of the programming tool.
• QnU(D)(H)CPU with a serial number whose first five digits are '10042' or higher (excluding Q00UJCPU)
• Built-in Ethernet port QCPU
• LCPU
■Specifying a range of index registers used for a 32-bit index setting
Values from -2147483648 to 2147483647 can be set to index registers.
The following shows how the index is set.
X0
EN
s
40000
X0
EN
s
ZR10Z0
Index setting
• Specification method
When setting indexes in 32-bit range, specify the start number of index registers to be used in the device setting of the PLC
parameter.
When changing the start number of index registers to be used in the device setting of the PLC parameter, do
not change nor write only parameters to the programmable controller. Always write parameters along with the
program to the programmable controller.
If data are forcibly written, the operation error "CAN'T EXE. PRG." (error code: 2500) occurs.
4 PROGRAM CONFIGURATION
60
4.6 Index Setting
DMOV
ENO Stores 40000 to Z0
d
Var_Z0
MOV
Stores the data of
ENO
ZR {10+40000} = ZR40010 to D0
d
D0