User guide

Bus OPC installation

User Guide

The sequence illustrates the messaging sequences that occur to convert a

error condition into an OPC error condition event. The 12 channel

architectural dimmer must be programmed before it is possible to send

error conditions and accept acknowledgements.

 Sequence 1: Each channel of the 12 channel architectural dimmer

generates an error condition report at regular intervals or as error

conditions change. The reports are sent as Error Reporting messages

over C-Bus. The message contains information such as the Error

Reporting device ID to uniquely identify the C-Bus unit as well as the

current error condition for the channel.

 Sequence 2: The C-Gate notifies the OPC Server of the Error

Reporting error condition. The OPC Server updates the corresponding

alarm condition state according to a state machine and updates any

OPC Clients. converts the Error Reporting messages into error

conditions, then stores the conditions in a state machine. The

conversion occurs in the following way:

FLOOR2.DIMMER.CHANNEL1.OVER_TEMP = TRUE

FLOOR2.DIMMER.CHANNEL1.OVER_TEMP_ACKED = FALSE

where FL00R2 refers to the specific C-Bus network, DIMMER refers

to the unit tag name, CHANNEL1 refers to the first of twelve (12)

channels, and OVER_TEMP refers to an alarm condition state and

OVER_TEMP_ACKED refers to the alarm condition acknowledgement

state (assuming that this alarm condition has been configured to

require acknowledgment).

 Sequence 3: As error conditions change, the C-Bus OPC Server sends

OPC events and alarm conditions to the OPC Client.

The sequence diagram below illustrates the messaging sequencing for

receiving an alarm acknowledgement from the OPC Clientbetween a C-

Bus network, a C-Gate server, a C-Bus OPC Server, and the OPC Client.

Figure 13: Sequence showing OPC Client alarm acknowledgment

Architectural

Dimmer

Seq 3

OPC Server OPC ClientC-Gate Server

Seq 2

Seq 1

The sequence illustrates the messaging sequences that occur to convert

an alarm acknowledgement from an OPC alarm to reset a error condition

state.

 Sequence 1: The OPC Client sends an OPC alarm acknowledgement to

the OPC Server. This could be an automated or manual process. The

conversion occurs in the following way:

FLOOR2.DIMMER.CHANNEL1.OVER_TEMP_ACKED = TRUE