511
APPENDICES
A
Appendix 5 Replacing Basic Model QCPU or Qn(H)CPU with QnUCPU
Appendix 5.1 Replacement precautions
(7) Switch on the front of the CPU module
*1 Only the High-speed Universal model QCPU whose serial number (first five digits) is "15043" or later and the Universal
model Process CPU whose serial number (first five digits) is "15072" or later support this type of latch clear operation.
Item Precautions Replacement method Reference
Switch on the front of the
CPU module
The operation method with the
RESET/RUN/STOP switch is modified.
The RESET/STOP/RUN switch of the
Universal model QCPU can be used for the
reset operation of the CPU module and
switching between the STOP and RUN status.
Section 6.1.3 in the QCPU
User's Manual (Hardware
Design, Maintenance and
Inspection)
Latch data cannot be cleared by the switch.
Perform either of the following operations to
clear latch data.
• Remote latch clear using a programming
tool
• Latch clear by using the special relay and
special register areas
*1
Page 137, Section 3.6.4
The system protect cannot be set by the switch.
Data in the files can be protected by setting a
password for each file. Password for each file
can be registered with a programming tool.
Page 206, Section 3.19
The parameter-valid drive setting is not necessary.
The Universal model QCPU automatically
determines the parameter-valid drive. Change
the setting as described in Page 555,
Appendix 5.4.6 when the parameter-valid drive
is set to other than the program memory in the
High Performance model QCPU.
Page 42, Section 2.1.2,
Page 555, Appendix 5.4.6
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