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Appendix 3.4.6 Parameter-valid drive and boot file setting
(1) Differences between High Performance model QCPU and Universal model QCPU
(a) High Performance model QCPU
The parameter-valid drive is specified by the switches on the front panel of the High Performance
model QCPU.
model QCPU.
(b) Universal model QCPU
The Universal model QCPU automatically determines the parameter-valid drive, depending on the existence of
parameters in the drive (program memory, memory card, or standard ROM).
Therefore, when replacing the High Performance model QCPU with the Universal model QCPU, changing the
boot file setting for parameter and/or moving files to another drive may be required.
When replacing the module, change the setting as described below.
parameters in the drive (program memory, memory card, or standard ROM).
Therefore, when replacing the High Performance model QCPU with the Universal model QCPU, changing the
boot file setting for parameter and/or moving files to another drive may be required.
When replacing the module, change the setting as described below.
(2) Method of replacing High Performance model QCPU with Universal model QCPU
(a)
When the parameter-valid drive is set to the standard ROM in the High Performance model
QCPU
(To the next page)
TableApp.42 When the parameter-valid drive is set to the standard ROM
Setting in High Performance model QCPU
Setting in Universal model QCPU
Setting in the Boot file tab of the PLC parameter
dialog box
No boot file setting
Change the setting so that the Universal model QCPU can refer to the
parameters in the standard ROM.
parameters in the standard ROM.
• Changes in parameter settings are not required.
• Delete parameters that exist in the program memory and memory card.
*2
Settings in the Boot file tab
(No boot file setting for parameters)
Change the setting so that programs are stored in the program memory in the
first place, instead of booting from the standard ROM.
first place, instead of booting from the standard ROM.
• Delete all settings for parameter in the Boot file tab of the PLC parameter
dialog box.
• Delete parameters that exist in the program memory and memory card.
*2
• Move the programs with boot setting into the program memory from the
standard ROM.
*1
Settings in the Boot file tab
Change the setting so that programs and parameters are stored in the
program memory in the first place, instead of booting from the standard ROM.
program memory in the first place, instead of booting from the standard ROM.
• Move the programs and parameters with boot setting into the program
memory from the standard ROM.
*1
• Delete all settings for parameter in the Boot file tab of the PLC parameter
dialog box.
Settings in the Boot file tab
(No boot file setting for parameters)
Change the setting so that the Universal model QCPU can refer to the
parameters in the memory card, and programs are booted from the memory
card to the program memory.
parameters in the memory card, and programs are booted from the memory
card to the program memory.
• Move the parameters in the standard ROM into the memory card.
• Make setting so that programs are booted from the memory card to the
• Make setting so that programs are booted from the memory card to the
program memory in the Boot file tab of the PLC parameter dialog box.
*3
Type
Transfer from
Transfer to
Program
Standard ROM Program memory
Type
Transfer from
Transfer to
Program
Standard ROM Program memory
Parameter
Standard ROM Program memory
Type
Transfer from
Transfer to
Program
Memory card
Program memory