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V350 turning on all inputs when one input is firec

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  • cubcrazy changed the title to V350 turning on all inputs when one input is firec
6 hours ago, Joe Tauser said:

Do this first.

It's probably got something to do with whether you have the inputs set to sinking or sourcing and what you're applying to Input 0.  Are you applying +24V or a contact closure as referenced to 0V?

Joe T.

I'm monitoring a mechanical pressure switch, when the switch closes it applies+24 Vdc to input 0. Some manufactures look at this as sourcing the input, others view it as sinking. 

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