App
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Appendix 5 Method of replacing High Performance model QCPU with Universal model QCPU
APPENDICES
(3) Drive and file
(4) External communication
(5) Diagnostic function
TableApp.50 Precautions for replacement and replacement methods (Drive and file)
Item
Precautions
Replacement method
Reference
Boot file setting
Files in the standard ROM cannot be
booted to the program memory.
Since the Universal model QCPU retains
the data in the program memory even the
battery voltage drops, the boot file setting
is not necessary.Move the files, which are
booted from the standard ROM to the
program memory, to the program memory.
Section 5.2.9 and
Section 5.2.11,
Appendix 5.4
Booting operation is different.
Replacement method when the
parameter-valid drive and the boot file
setting are set in the High Performance
model QCPU is described in Appendix
5.4.
Automatic all data write
from memory card to
standard ROM
The setting method of this function is
different.
On the Boot file setting tab of PLC
parameter, select "standard ROM" for the
transfer destination. Note, however, that
the transfer destination of "program" is
fixed to "program memory". (Setting by
DIP switches is not necessary.)
Section 5.2.8 and
Section 5.2.9
TableApp.51 Precautions for replacement and replacement methods (External communication)
Item
Precautions
Replacement method
Reference
Module service interval
time read
The module service interval time cannot
be read.
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MC protocol
The following frame types cannot be used
when accessing the Universal model
QCPU.
• A-compatible 1C frame
• A-compatible 1E frame
Use the frame types below.
• QnA-compatible 2C/3C/4C frame
• QnA-compatible 3E frame
• 4E frame
"Q Corresponding
MELSEC
Communication Protocol
Reference Manual"
TableApp.52 Precautions for replacement and replacement methods (Diagnostic function)
Item
Precautions
Replacement method
Reference
Error history
Error history data cannot be stored in the
memory card.
The Universal model QCPU stores all
storable data (maximum 100) in the built-
in memory.
LED indication priority
setting
LED indication priority cannot be set. Only
LED indication setting at error occurrence
is supported.
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