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Appendix 3 Method of Replacing Basic Model QCPU or High Performance Model QCPU with Universal
Model QCPU
Appendix 3.1 Replacement Precautions
APPENDICES
App - 15
(3) Drive and file
(4) External communication
*1: The serial number (first five digits) of the applicable module (Q02UCPU, Q03UDCPU, Q04UDHCPU, Q06UDHCPU, Q13UDHCPU, and
Q26UDHCPU) must be "10101" or earlier.
TableApp.11 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 holds
the data in the program memory even
when the battery voltage drops, the boot
file setting is not necessary.
Move files with the boot setting (from the
standard ROM to the program memory) to
the program memory.
Section 5.1.8, 5.1.10,
Appendix 3.4.6
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
3.4.6.
Automatic all data write
from memory card to
standard ROM
The setting method of this function is
different.
In the Boot file tab of the PLC parameter
dialog box, 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 5.1.8
TableApp.12 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.
--- Section 6.24.1
MC protocol
The following frame types cannot be used
when accessing the Universal model
QCPU.
*1
• 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
The following commands cannot specify
monitoring conditions.
• Randomly reading data in units of word
(Command: 0403)
• Device memory monitoring (Command:
0801)
The applicable frame types are as follows:
• QnA-compatible 3C/4C frame
• QnA-compatible 3E frame
•4E frame
---