Facing an error in RS View32 works

AB2005 · Aug 19, 2009

Dear Friends;
I have been working with RS View32 for designing an HMI. When I write the expressions mentioned bellow, system doesn’t accept and ask expression missing or incomplete which I coloured. Please check and find out the mistake as I am new with this software.

If Shift_2ndstarted = 1 Then Prod_2ndshift Else 0 + Prod_1stshift + If Shift_3rdstarted = 1 Then Prod_3rdshift Else 0

Tags are
1) Shift_2ndstarted
2) Prod_2ndshift
3) Prod_1stshift
4) Shift_3rdstarted
5) Prod_3rdshift

Gil47 · Aug 19, 2009

This is just my feeling it is,
That you can only have one IF statement at the start, and one ELSE statement at the end, in an expression, all the other IF or ELSE statements probably need to be ELSEIF.

Sinc_green · Aug 19, 2009

AB,

there looks to be a few things wrong, can you explain in words what these statements are meant to accomplish?

naeemmsc · Aug 20, 2009

slaam ,i am Naeem from pakistan.Do u like which one HMI you want to design.I have proface hmi.

AB2005 · Aug 20, 2009

Dear Sinc green;

1) Shift_2ndstarted (this tag is 1 after 14:30)
2) Prod_2ndshift (2nd shift production)
3) Prod_1stshift (1st shift production)
4) Shift_3rdstarted (this tag is 1 after 22:30)
5) Prod_3rdshift (3rd shift production)

I want to create a numeric display for total production of the day start from 1st shift (from 06:30). During 1st shift when both tags “Shift_2ndstarted” and “Shift_3rdstarted” would be Zero, total production counter would only display the value in “Prod_1stshift”. When “Shift_2ndstarted” would be 1, then value in “Prod_2ndshift” would add in “Prod_1stshift” and display in total production counter and the same when Shift_3rdstarted would be 1.

Brownhat · Aug 20, 2009

You could try isolating the If statements with parenthesis.

(If Shift_2ndstarted = 1 Then Prod_2ndshift Else 0) + Prod_1stshift + (If Shift_3rdstarted = 1 Then Prod_3rdshift Else 0)

Or, do away with the If statements, and let math do the work.

Prod_1stshift + Shift_2ndstarted * Prod_2ndshift + Shift_3rdstarted * Prod_3rdshift

robertmee · Aug 20, 2009

Yep, just do the math equation as BrownHat suggested.

Facing an error in RS View32 works

AB2005

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Gil47

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naeemmsc

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AB2005

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Brownhat

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