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Section XVI Communications 331 Asking For Event Data To ask for the static value for an Analog Status(using our example above) you must configure a trend or data log tag as: 32/3/1:NS 32 represents the Object Type: Analog Input Event (meaning with time stamp) 3 represents the Any Variant With Time. 1 represent the Analog Input register index. NS (VT Scada Configuration) use polling engine for polling interval. Asking For Static Data (Current Value) To ask for the static data or live value, a VT Scada example would look like this: 30/1/1:NS 30 represents the Object Type: Analog Input Static (meaning with time stamp) 1 represents the Any Variant Without Time. 1 represent the Analog Input register index. NS (VT Scada Configuration) use polling engine for polling interval. For details on supported types and variants, see the DNP 3 Compliance Document http://www.iclinks.com/public_ftp/TechSupport/DNPProfile/PinnacleDnpProfile.htm.
