Hi, sugeng
This is Tatsumi Fujieda from National Instruments.
You can see the sample VI to use integral function.
1. click the "ctrl+H" and show detail help on block diagram.
2. Move the mouse to the integral function, you can see the function detail.
3. On the detail windows, you can see the online help and click the one.
4. Click the "Open the sample" bottom of the online help.
By the way, what LabVIEW version are you using?
Best regard,
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Tatsumi Fujieda
Technical Database: http://www.ni.com/kb
Applications Engineer
National Instruments Japan Corporation
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