APPENDICES
Appendix 5 Method of replacing High Performance model QCPU with Universal model QCPU
App
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Device
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CP
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2) Subroutine program
• In the subroutine program, an failure status is checked using a failure
detection ladder pattern.
If a failure is detected, a failure number is stored in D200 and the
annunciator F200 is turned ON.
• Specify the following arguments for the subroutine program.
(d) Replacement method when failure detection ladder patterns are changed by
the CHKCIR and CHKEND instructions
Failure detection ladder patterns can be changed in the subroutine program
described in (C).
First argument
Device number of X device targeted for failure check
(Input)
Second argument
Contact number of X device targeted for failure check
(Input)
Figure App.14 Sample program
<Failure detection target>
If a failure is detected, the
coil number corresponding
to the failure type is set to
D100.
If a failure is detected, a
failure number is created
by combining the coil
number corresponding to
the failure type and the
contact number.
The annunciator is turned
ON.
