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To use an I/O refresh instruction, confirm that at least 3 ms elapse between
I/O refresh operations; otherwise, the output command of a message may
not be input to the Voice Unit.
IORF (97)
(I/O refresh instruction)
3 ms min.
Ordinary I/O refresh
Ordinary I/O refresh
3 ms min.
Phrase Combination Mode Example Programs
Section 4-2
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