Ge Proficy Historian User Manual
The MatrikonOPC Server for GE Proficy Historian or Intellution iHistorian is used to extract both real-time and archived data. Any OPC compliant application can connect to this server using either the OPC DA (Data Access) or OPC HDA (Historical Data Access) communication standards. Support is included for: • access to both real-time and archived data • reading and writing • all available iHistorian point types • automated tag browsing • timestamps directly from the database • direct access using the iHistorian API • connections to multiple iHistorian databases simultaneously • Aggregates List: Interpolated, Maximum, Maximum Actual Time, Minimum, Minimum Actual Time, Time Average, and many more. • Intel® Pentium® 4 Processor • 512 MB RAM • Minimum 32 MB of available hard disk space • CD-ROM driver • Super VGA (800 × 600) or higher-resolution monitor with 256 colors • Mouse pointing device PC Software The following Windows Operating Systems will support this OPC Server: • Windows 2000 • Windows XP • Windows 2003 Features Include: • Support for DDE • Aliases for tag names • Calculation engine Device Software Required Software: • Intellution iHistorian version 1, 2 or 3 OR • GE Proficy Historian.
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There are several different sampling modes you can experiment with. • Raw • Interpolated • Lab • Trend • Calculated These modes are available using all of the following APIs. • User API (ihuapi.dll) • SDK (ihsdk.dll) • OLEDB (iholedb.dll) • Client Acess API (Proficy.Historian.ClientAccess.API) Of these the trend sampling mode is probably what you want since it is specifically designed for charting/trending. Though, lab and interpolated may be useful as well. Read the electronic book for more information on each sampling mode.
On my machine it is stored as C: Program Files GE Fanuc Proficy Historian Docs iHistorian.chm and I have version 3.5 installed. Pay particular attention to the following sections. • Using the Historian OLE DB Provider • Advanced Topics Retrieval Here is how you can construct an OLEDB to do trend sampling.
Set SamplingMode = 'Trend', StartTime = '2010-07-01 00:00:00', EndTime = '2010-07-02 00:00:00', IntervalMilliseconds = 1h select timestamp, value, quality from ihRawData where tagname = 'YOUR_TAG' Showing the equivalent methods using the User API and the SDK are complex (more so with the User API) since they require a lot of plumbing in the code to get setup. The Client Access API is newer and uses WCF behind the scenes. By the way, there are a few limitations with the OLEDB method though. • Despite what the documentation says I have never been able to get native query parameters to work.
That is a showstopper if you want to use it with SQL Server Reporting Services for example. • You cannot write samples into the archive or in any way make changes to the Historian configuration including adding/changing tags, writing messages, etc. • It can be a little slow in some cases. Penmai Serial Stories. • It has no provision for crosstabbing multiple tagnames into the columns and then carrying forward samples so that a value exists for each timestamp and tag combination.
The trend sampling mode gets you halfway there, but still does not crosstab and does not actually load raw samples. Then again the User API and SDK cannot do this either. We wrote a wrapper DLL that looked like this like this: [DllImport('IHUAPI.dll', CallingConvention = CallingConvention.StdCall, EntryPoint = 'ihuReadRawDataByTime@24')] public static extern int ihuReadRawDataByTime(int serverhandle, string tagname, ref IHU_TIMESTAMP startTime, ref IHU_TIMESTAMP endTime, ref int noOfSamples, ref IHU_DATA_SAMPLE* dataValues).