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Old August 21st, 2003, 06:01 PM   #1
jthornton
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Latch a Bit then Bit Shift Left

Ok after reading the help file it says that if you latch a bit u must unlatch it with an OTU instruction...

What I am doing is to turn on a bit (latch it) if the trigger is present then the next scan do a bit shift then latch etc. All seems to work well when the bit shift fires the original bit B10:0/0 unlatches itself which is what I want to happen and the next bit B10:0/1 is now a one ala the bit shift left.

"In the event of a power loss, any OTL controlled output device will energize with the return of power if the OTL bit was set when power was lost." I'm doing a FLL on the Bits for the Bit Shift Left on the first scan so it should take care of this I hope... gotta go and test this...

Am I missing anything here???

Will it explode in my face someday???

It works in testing...

 
[trigger]--[ons]---(BSL B10:0)
[trigger]----------(L B10:0/0)



AB SLC 5/03
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Old August 21st, 2003, 09:59 PM   #2
Eric Nelson
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That should work fine. Since B10:0/0 is set by the latch, during a power loss it would be ON at powerup (if it WAS on before power went out), but you FILL will clear it out.

beerchug

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Old August 22nd, 2003, 06:35 AM   #3
jthornton
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Thanks for the validation.

John

beerchug
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