Math function problem ge fanuc 90 30 - PLCS.net

fhervrylesestoso · May 7th, 2011, 01:09 AM

GOOD DAY:

we have problems regarding math functions DIV INT dont do any calculations, all parameters are met.

we do it like this:

from function block "CSS1"
we get the variables "SET_SPEED_K8" (%R00708)(word)
then we use it on the DIV_INT as dividend.
8260 as divisor.

at start "SET_SPEED_K8" has a value of 15000
so we expect to have a quotient of 1 (since this is in INT form)
but there is no qoutient at all.

we also try to convert it from INT to REAL then use DIV_REAL but still nothing happened..

the variables "SET_SPEED_K8" are originally from CSS1 LD block.,
the math functions wherein SET_SPEED_K8 were used are located in "CSS2" a new LD block.. does math function requires it input to be in same LD block?? thank you.

thanks!!!

Steve Bailey · May 7th, 2011, 06:58 AM

It sounds to me like the CSS2 block isn't being called.

fhervrylesestoso · May 8th, 2011, 12:01 AM

OK ill check that sir,
Thought that it was just a validate-then-download program...

Steve Bailey · May 8th, 2011, 07:05 AM

Somewhere in your program, usually in the _MAIN block, you need to include a CALL instruction to your CSS2 block. Do a search for the CALL instruction to the CSS1 block and CALL the CSS2 block right after it.

May 7th, 2011, 01:09 AM	#1
fhervrylesestoso Member Join Date: Apr 2011 Location: Valenzuela City, NCR, Philippines Posts: 231	Math function problem ge fanuc 90 30 GOOD DAY: we have problems regarding math functions DIV INT dont do any calculations, all parameters are met. we do it like this: from function block "CSS1" we get the variables "SET_SPEED_K8" (%R00708)(word) then we use it on the DIV_INT as dividend. 8260 as divisor. at start "SET_SPEED_K8" has a value of 15000 so we expect to have a quotient of 1 (since this is in INT form) but there is no qoutient at all. we also try to convert it from INT to REAL then use DIV_REAL but still nothing happened.. the variables "SET_SPEED_K8" are originally from CSS1 LD block., the math functions wherein SET_SPEED_K8 were used are located in "CSS2" a new LD block.. does math function requires it input to be in same LD block?? thank you. thanks!!!

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May 7th, 2011, 06:58 AM	#2
Steve Bailey Lifetime Supporting Member + Moderator Join Date: Apr 2002 Location: The boondocks of Western Massachusetts USA Posts: 4,658	It sounds to me like the CSS2 block isn't being called.

May 8th, 2011, 12:01 AM	#3
fhervrylesestoso Member Join Date: Apr 2011 Location: Valenzuela City, NCR, Philippines Posts: 231	OK ill check that sir, Thought that it was just a validate-then-download program...

May 8th, 2011, 07:05 AM	#4
Steve Bailey Lifetime Supporting Member + Moderator Join Date: Apr 2002 Location: The boondocks of Western Massachusetts USA Posts: 4,658	Somewhere in your program, usually in the _MAIN block, you need to include a CALL instruction to your CSS2 block. Do a search for the CALL instruction to the CSS1 block and CALL the CSS2 block right after it.

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