9 Mapping of DataTypes ToC Previous Next

9.3 OPC UA Structure DataTypes ToC Previous Next

9.3.4 LocalCoordinate ToC Previous Next index

This DataType is a structure that defines the location of an object in a Cartesian local coordinate system arbitrarily chosen during configuration of an RTLS system. Its composition is formally defined in Table 47.

Table 47 – LocalCoordinate Structure

Name Type Description
LocalCoordinate Structure Subtype of Structure defined in OPC 10000-5.
X Double The X – coordinate of the object’s position in the unit defined by the LengthUnit property of the AutoID Device.
Y Double The Y – coordinate of the object’s position in the unit defined by the LengthUnit property of the AutoID Device.
Z Double The Z – coordinate of the object’s position in the unit defined by the LengthUnit property of the AutoID Device.
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.
UsefulPrecision Int32 Values for Easting, Northing, and Altitude should be rounded by the clien tapplication 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 48.

Table 48 – LocalCoordinate Definition

Attribute Value
BrowseName LocalCoordinate
IsAbstract False

Subtype of Structure defined in OPC 10000-5.

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