The variable Inertia uses the 3DVektorType to describe the three values of the principal moments of inertia with respect to the mounting point coordinate system. If inertia values are provided for rotary axis the CenterOfMass shall be completely filled as well. Table 48 describes the possible degrees of modelling from a minimal one e.g. only the weight of the mass to a complete one comprising weight, center of mass, principal axes and inertia.
3DVectorType and 3DVector are defined in OPC 1000111 (SpatialTypes).
Table 48 – LoadType possible degrees of modelling

Mass 
CenterOfMass 
Inertia 

X, Y, Z 
A, B, C 


Mass only 
Used 
 
 
 
Mass with center of gravity 
Used 
Used 
0, 0, 0 
 
Mass with inertia 
Used 
Used 
Used 
Used 