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2/8/2008 6:37 AM | |
Posts: 3 Rating: (0) |
Dear All, I am working on PCS7 project with CPU 417-4H. I am facing a problem in flow totaliser. I have attached two blocks in a sample project FB2-Totaliser driver and FB3-Totaliser calls. I have called FB3 in a CFC which is called in OB 36 with a cyclic intrupt of 1000ms.The problem i am facing is that the totaliser is not adding properly. Whenever my totalised valueis around20000.0then the totaliser is addingmore then normal and when the totalised value is around 40000.0 then the totaliser is addinglower then normal. But when the totalisation is started from 0.0 it is perfact. I have tried many ways like : 1. Calling FB3 in OB33 of 500ms and changing division factor in FB2 to 7200. 2. Calling FB3 in OB35 of 100ms and changing division factor in FB2 to 36000. 3. Giving a constant value in place of flow rate. But the problem is still there. Please give your suggesstions to rectify the problem. Thanks in anticipation. Regards Rahul Singhal AttachmentTotalize.zip (285 Downloads) |
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