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 100005. 
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 nth 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 100005. 