User guide

Bus OPC installation

User Guide

How C-Bus messaging translates to OPC Server objects

The C-Bus OPC Server utilises the OPC Data Access and OPC Alarms and

Events interfaces, which define how OPC clients and servers can transmit

data to each other. The specification is based around a component object

model and takes advantage of Microsoft DCOM (distributed component

object model) technology.

Translation of OPC Data Access objects to Lighting Compatible

groups

The DA item objects correspond with Lighting Compatible groups:

Lighting, Trigger Group, Enable Network Variable, and Lighting Type

groups such as DALI. The subitem object corresponds to the Lighting

Compatible group. See The OPC Data Access interface (on page 10) for a

list of applicable Lighting Compatible applications.

Translation of OPC Alarms and Events objects to units and error

messages supported by Error Reporting application

Each network that contains at least one unit configured for use with the

OPC Alarms and Events interface has a corresponding area. Each network

area contains unit areas corresponding to the configured units. Each unit

contains unit channel sources corresponding to the unit channels with at

least one error condition configured for use with OPC Alarms and Events.

Each unit channel source contains error conditions corresponding to the

configured alarm conditions.

The hierarchy in the OPC Alarms and Events interface area space is as

follows:

See OPC Alarms and Events interface (on page 15) for a list of C-Bus units

supported by each of the interfaces.