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 LengthUnitproperty of the AutoID Device.

Y

Double

The Y – coordinate of the object’s position in the unit defined by the LengthUnitproperty of the AutoID Device.

Z

Double

The Z – coordinate of the object’s position in the unit defined by the LengthUnitproperty 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

References

NodeClass

BrowseName

DataType

TypeDefinition

Other

Subtype of Structure defined in OPC 10000-5.