FUJITSU MB91460 SERIES FR60 - Manual (Page 806)

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Chapter 38 Reload Timer
7.Q & A
Reload mode, Initial value “L” level output
Set to “0”
Reload mode, initial value “H” level output (reversed)
Set to “1”
One-shot mode, counting “H” level output
Set to “0”
One-shot mode, counting “L” level output (reversed)
Set to “1”