Variable table value is not matching with Function block value in S7

pullareddy

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• Nov 22, 2007

• #1

Variable table value is not matching with Function block value in S7

Deference in decimal points in LAD

 

aikona

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• Nov 22, 2007

• #2

Need more info !

Could be that the FC is using a word or byte or even double word ... are you using the same format in the vat table

Eric

 

pullareddy

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• Nov 22, 2007

• #3

we are using a real value in DB block and same in vat table

 

Madman

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• Nov 22, 2007

• #4

Maybe you used different representation of you variable table value and FB value?

 

PeterW

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• Nov 22, 2007

• #5

Also, is you block called more than once and you've not set up to monitor a single instance?

 

dahnuguy

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• Sep 23, 2009

• #6

did someone mention block consistancy?

select "blocks" in project tree, then "edit" from the menu, go down to block consistancy.

Save all check BC download all to PLC.

That is if nothing is actually wrong in your code.