totalizer script in VB

amit22

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• Jun 18, 2009

• #1

hello everybody,

anybody can help me out to develop Vb script for TOTALIZER of any analog value?

what is the formaula of the TOTALIZER? and how can we achieve this VB script..

 

ndzied1

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• Jun 18, 2009

• #2

I think you have to be a little more specific about what you want this TOTALIZER to do? What features do you need to implement?

More information about your application will lead to better answers.

 

amit22

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• Jun 18, 2009

• #3

nothing..man..i have one analog value and i want to totalize it but with VB script..

 

rdrast

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• Jun 18, 2009

• #4

pseudocode:

Code:

do {
   TotalVal = AnalogIn_Per_Minute / 6;
} every 10 seconds

 

panic mode

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• Jun 18, 2009

• #5

shouldn't TotalVal be added as well?

 

JesperMP

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• Jun 18, 2009

• #6

Do not do this in the HMI !
Do it in the PLC.

 

ndzied1

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• Jun 18, 2009

• #7

amit22 said:

nothing..man..i have one analog value and i want to totalize it but with VB script..

Click to expand...

Code:

If xInput then
     iTotal = iTotal + 1
End If

That does totalizing as far as you have defined. Not sure it will work since we don't know the application...

 

tvich

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• Jun 18, 2009

• #8

Completely agree with JesperMP. Myself, I'd strongly recommend doing it in a PLC if you can. Can I ask what your control scheme is? What SCADA/HMI package and PLC?

 

amit22

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• Jun 19, 2009

• #9

want to do it in SCADA..i want this analoginput as a totalizer in the screen..can u help me?

 

Banker

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• Jun 19, 2009

• #10

Hi Amitt22

I will also do totalizer in the PLC. And if possible use long real (64 bit).
But if you want it done on the SCADA use at timed script 1 sec. and your analog imput is in l/h:

Total := total + Analogin / 3600;

Banker

 

amit22

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• Jun 19, 2009

• #11

hi banker thx for the reply but wht should be the Total here i have to take?

 

amit22

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• Jun 19, 2009

• #12

please help me out if any body know this it is urgent requirement..with some mathematical expression we can develop it..??

 

rdrast

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• Jun 19, 2009

• #13

panic mode said:

shouldn't TotalVal be added as well?

Click to expand...

Yes, absolutely correct. So much for replying without finishing 3rd coffee of the morning

@Amit22 --
You have been given several, similar answers. Can you not understand them?
And the reason to NOT TOTALIZE IN THE HMI is you will introduce many inaccuracies. Totalize in the PLC, with a fixed time base, and read the total on the HMI.