APPENDICES
Appendix 5 Method of replacing High Performance model QCPU with Universal model QCPU
App
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(c) Program after replacement
In the sequence program after replacement, two programs are required as shown
below.
A sample program can be downloaded from the MELFANSweb.
1) Main routing program
• Set "0" in the input data area at the rising edge of the execution instruction
( "M0" in the program below) and initialize the program.
• Execute the CALL instruction at every rising edge of the strobe signal
( "X108" in the program below) so that a subroutine program is called.
• In the subroutine program, input codes are added to the input data area
and the completion status is checked.
• Transfer the following data to the subroutine program at the execution of
the CALL instruction.
• ASCII code input value from the input module (Xn0 to Xn7)
• Number of digits to be input.
• Indirect address of the input data area (Use the ADRSET instruction to
acquire the indirect address for the input data area.)
• Bit devices to be turned ON when input is completed.
Figure App.16 Program execution
Figure App.17 Sample program
FEND
RET
END
<After transition>
END
<Before transition>
Initial processing
ASCII code is added to the input data area.
P2
Main routine
program
Main routine
program
Subroutine
program
The input data area is initialized.
A subroutine program is called at
the rising edge of the strobe signal.
