The DRAS client uses the standard NiagaraAX network architecture. See About Network architecture in the NiagaraAX Drivers Guide for more details. The DRAS components are the station interface to DR events coming from DRAS servers. The DRAS device forms a “participant”, which resides under the DRAS Network which in turn is located under the station’s “Drivers” container.
Hierarchically, the component architecture is: DRAS Network, DRAS Device, DRAS Program and DRAS Event.
Figure 1. Dras network hierarchy in the nav tree
The following sections describe the major parts of the DRAS architecture: