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(4) Replacing the RFS instruction
If any I/O numbers targeted for forced on/off are included in the partial refresh range specified by the RFS instruc-
tion, add subroutine calls for P10 and P11 before and after the RFS instruction. (P10 and P11 are pointers shown
in the program examples in (2).)
If no I/O number targeted for forced on/off is included, addition of subroutine calls for P10 and P11 is not neces-
sary.
(a) When partial refresh for input (X) is executed by the RFS instruction
Add a subroutine call that executes forced input after the RFS instruction.
(b) When partial refresh for output (Y) is executed by the RFS instruction
Add a subroutine call that executes forced output before the RFS instruction.
(5) Restrictions
Replacements described in (2) to (4) do not apply in the following cases.
• Input and output targeted for forced on/off are referred to or changed using the direct input device (DX) and
direct output device (DY).
• Input and output targeted for forced on/off are referred to or changed within an interrupt program.
App - 63
A subroutine call that executes
forced input is added.
A subroutine call that executes
forced output is added.
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