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| (点击题目可以在互联网中搜索该题目的相关内容) 日期：2006-11-27 23:48:00 来源： 作者： 点击： | |
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How can i get out the data from sqserver 2000. I have some tags and i want there values. In what intervals is the program stores the value of the tags? In which table sould i look an what is the structure of the table ex. tagname ts value ? something like that? If you wont to read data from SQL without connectivity pack you need to save them in TagLogging Slow. If data are stored in tag logging slow they are not coded so it is eazey to read them. So go on: ************************************************** *************** Tag logging->Archive Configuration->TagLoggingFast->Archive contents 1.unmark acyclic measured values 2.cyclic meas. values with cycle set on 1×500ms <------------- | Tag logging->Archive Configuration->TagLoggingSlow->Archive | configuration | 1. time perriod of all AND single set on MAX cca 5 Gigabytes | 2.cyclic meas. values with cycle set on 1×500ms | | Acquition cycle of each tag in Archive MAST BE > 1×500ms------ on the end you need to reset archive: Archive Configuration->TagLoggingSlow AND TagLoggingFast->RMB-> RESET ************************************************** *************** Go on EXCEL-> Data->Get externel data->New database query-> ..... |
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