scl programming

Stavrina Deve

Member
S
Join Date
Feb 2016
Location
athens
Posts
7
hello there
my aim is to write a bigger program but i noticed that there was a difference if I calculate c1 first and then c2 ,and if i calculate c2 first and then c1.
Can anyone tell me what is going on ? This is not logic ....

Capture.jpg Capture1.jpg
 
I think you're right, that shouldn't happen.

Is anything overwriting c2 elsewhere in the project?

You might want to try a compile rebuild all for your code, and see if that makes a difference. I've seen it fix some wierd issues, especially in older versions of portal.
 
Which CPU are you using? - the floating point results are questionable to say the least.

c1 = 0.0634000 using a calculator
c1 = 0.0638491 from your screen shot
c1 = 0.0633997 using PLCSIM in S7 V5.5


c2 = 0.4354000 using a calculator
c2 = 0.4371863 from your screen shot
c2 = 0.4354000 using PLCSIM in S7 V5.5
 

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