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9.3 OPC UA Structure DataTypes ToC Previous Next

9.3.16 WGS84Coordinate ToC Previous Next index

This DataType is a structure that defines the georeferenced location of an object on the earth’s surface in latitude, longitude and altitude using the World Geodetic System’s (WGS84) reference frame. Its composition is formally defined in Table 65.

Table 65 – WGS84Coordinate Structure

Name Type Description
WGS84Coordinate Structure  
   N/S Hemisphere String ‘N’ or ‘S’ for northern or southern hemisphere
   Latitude Double Latitude in the unit defined by the GeographicalUnit property of the DeviceLocation Variable of the AutoID Device defined in 6.1.3.8.
   E/W Hemisphere String ‘E’ or ‘W’ for eastern or western hemisphere
   Longitude Double Longitude in the unit by the GeographicalUnit property of the DeviceLocation Variable of the AutoID Device defined in 6.1.3.8.
   Altitude Double Altitude in the unit by the GeographicalUnit property of the DeviceLocation Variable of the AutoID Device defined in 6.1.3.8.
   Timestamp UtcTime Timestamp in UtcTime
   DilutionOfPrecision Double DOP is a value for the variance of the measurements delivered by the location system. The calculation of the value depends on the underlying system and is vendor specific. Values should be in accordance with the implementations like in GNSS systems.
   UsefulPrecisionLatLon Int32 Values for Latitude and Longitude should be rounded by the client application to the n-th position after the decimal point.
It specifies the number of useful digits after the decimal place.
   UsefulPrecisionAlt Int32 Values for Altitude should be rounded by the client application to the n-th position after the decimal point.
It specifies the number of useful digits after the decimal place.

Its representation in the AddressSpace is defined in Table 66.

Table 66 – WGS84Coordinate Definition

Attributes Value
BrowseName WGS84Coordinate
IsAbstract False
Subtype of Structure defined in OPC 10000-5.  

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