ControLogix PLC Function Block Diagram programming

wesley szymczyk

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W

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Apr 2003

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Pasadena, CA

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• Apr 18, 2003

• #1

Hello everybody,

I have some issues to resolve regarding Function Block Diagram programming for Allen Bradley ContrilLogix PLC. I need to write the state logic using latched coils. Is there a way to latch a bit using FBD's?

 

jvdcande

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Apr 2002

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Menen

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• Apr 19, 2003

• #2

Yes Wesley, there is: the RESD block acts the same as a Latch-Unlach pair, where the SETD block acts as a Unlatch-Latch pair.

Kind regards,

Jean Pierre Vandecandelaere

 

randylud

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Oct 2002

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Greensboro,NC

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• Apr 19, 2003

• #3

ControlLogix

Also, check out Allen-Bradley and look for this publication 1756-PM001E-EN-P. I am sure it will help solve most programming dilemmas. Beware, this PDF file is almost 5 meg so if you use dial-up, get some coffee and a snack while it downloads.

 

wesley szymczyk

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Pasadena, CA

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• Apr 24, 2003

• #4

Gentleman, many thanks for your advice.

Best regards,

wesley