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APPENDICES
A
Appendix 5 Replacing Basic Model QCPU or Qn(H)CPU with QnUCPU
Appendix 5.5 Special Relay and Special Register
SM330 Operation mode for low-speed execution type program
The Universal model QCPU does not support low-
speed execution type programs. Delete the
corresponding sections.
SM331 Normal SFC program execution status The Universal model QCPU supports only normal SFC
programs. Delete SM331 and SM332, which are used
as interlocks, or replace them with SM321.
SM332 Program execution management SFC program execution status
SM390 Access execution flag
Modify the program that Module ready signal (Xn) is
used as an interlock, according to sample programs
described in the manual for each module.
SM404
ON for only 1 scan after RUN of low-speed execution type
programs
The Universal model QCPU does not support low-
speed execution type programs. Delete the
corresponding sections or replace them with the special
relays for scan execution type programs (SM402 and
SM403).
SM405
Off for only 1 scan after RUN of low-speed execution type
programs
SM430 User timing clock No.5 (for low-speed execution type programs)
The Universal model QCPU does not support low-
speed execution type programs. Delete the
corresponding sections or replace them with the special
relays for scan execution type programs (SM420 and
SM424).
SM431 User timing clock No.6 (for low-speed execution type programs)
SM432 User timing clock No.7 (for low-speed execution type programs)
SM433 User timing clock No.8 (for low-speed execution type programs)
SM434 User timing clock No.9 (for low-speed execution type programs)
SM510 Low-speed execution type program executing flag
The Universal model QCPU does not support low-
speed execution type programs. Delete the
corresponding sections.
SM551 Module service interval time read
The Universal model QCPU does not support the
service interval measurement function. Delete the
corresponding sections.
SM580 Program to program I/O refresh
Perform I/O refresh at the start or end of each program
with the RFS or COM instruction.
SM660 Boot operation
Move files with a boot setting (from the standard ROM
or a memory card to the program memory) to the
program memory.
SM672 Memory card file register access range flag
When outside the range of the file register in the
memory card is accessed, the Universal model QCPU
detects "OPERATION ERROR" (error code: 4101).
Programming for detecting errors using this special
relay is not necessary. Delete the corresponding
sections.
SM710 CHK instruction priority flag
The Universal model QCPU does not support the CHK
instruction. For the replacing method of the CHK
instruction, refer to Page 529, Appendix 5.3.3 (4).
SM734 XCALL instruction execution condition specification
The Universal model QCPU executes the XCALL
instruction on the rising edge of execution condition as
well. There is no application for this special relay.
Delete the corresponding sections.
SM735 SFC comment readout instruction in-execution flag
The Universal model QCPU does not support the
following instructions:
• SFC step comment readout instruction
(S(P).SFCSCOMR)
• SFC transition condition comment readout instruction
(S(P).SFCTCOMR)
Delete the corresponding sections.
Number Name/Description Measures
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