Function Block Programming Question

You answered your own question?

Marshy said:

You answered your own question?

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I can't find the "icon" in RSLogix5000 to get the invert on the screen.

It's available in Siemens and Modicom plus a few others. Where does it reside in Logix5000?

If you dont do function block programming why are you doing it. you can still do it the logical way

SMOKE said:

If you dont do function block programming why are you doing it. you can still do it the logical way

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Project specifications call for function block. I have to convert our standard program to function block.

Do not know if your software (RSlogix 5K) has Function Blocks capabilities ( if negative you have to buy it), if positive the FB you have to use is called ( NOT = Bitwise Not).
Open RSlogix, the help then help instruction then type NOT and you will find an explanation on how to use this instruction.

semilogical,

I don't see a facility in RSLogix5000 to simply add an invert to the input of an AND gate like Siemens does. Looks like you have to add a BNOT block for each inverted input on a BAND instruction.

Personally, unless this logic is pretty minor, I put it back in ladder and send the result to the function block. It's a lot cleaner. I don't like my function block page cluttered with a bunch of boolean blocks.

P.S. You would have got an answer a lot sooner if you had actualy mentioned you wanted to know about RSLogix5000 in your first post.

mellis said:

semilogical,

P.S. You would have got an answer a lot sooner if you had actualy mentioned you wanted to know about RSLogix5000 in your first post.

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I've been asking a few different places and when I did the cut and paste it was from an AB forum. Sorry.