12/17/2010 7:41 AM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365) |
Dear member The idea of Riemann integral may help(http://en.wikipedia.org/wiki/Riemann_integral).
For using Riemann integral , in OB35 by cyclic interrupt of 100ms you can simply use following codes: [code] L #INPUT //F(ti) in Riemann sum L 0.1 // (Xi+1 -Xi ) in Riemann sum *R T #TEMP NOP 0 L #TOTALIZER +R T #TOTALIZER[/code] { #INPUT //F(ti) in Riemann sum } {0.1 // (Xi+1 -Xi ) in Riemann sum } I hope this helps, Best regards |
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12/17/2010 11:39 AM | |
Posts: 316 Rating: (37) |
Hi Hellf, you can use a nother OB or parameters of the interrupt OB. The parameters you hzave to change you can find in the manual: http://support.automation.siemens.com/WW/view/de/44240604/0/en on page 25. In your case you have to change the loacal Data"OB35_EXC_FREQ" of the interrupt OP. |
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