Step 3.2. Use the OPC Alarm and Event Client Alarm Viewer

Open an Alarm Viewer control or the stand alone Alarm Viewer on the client computer.

The display reflects your configuration and the alarm source.

1	Configured source
	Alarm ID	Qualified path used as the alarm ID for an alarm created in the client project.
	Message	Depends on what is specified in the A & E OPC Client dialog box.
	Class	Selected when the alarm is configured in the client project.
	Subcondition	The Subcondition column displays the sub-condition defined by the alarm limits in the Server project. The display color is the sub-condition color for the class that is selected in the Client project.
		State/Ack	Color based on:
		Unacknowledged alarm	HiHi for selected class.
		Acknowledged	HiHi acknowledged for selected class.
		Normal	Normal for selected class.
2	Source alarm
	Alarm ID	Automatically created qualified path that identifies the server alarm. Note: You can manually create qualified alarms on the client computer in order to do customized display and logging configuration.
	Message	Depends on what is specified in the A & E OPC Client dialog box.
	Class	Client $SYS class.
	Subcondition	The Subcondition column displays the sub-condition defined by the alarm limits in the Server project. The display color is the $SYS class HiHi sub-condition that is defined in the Client project.
		State/Ack	Color based on:
		Unacknowledged alarm	HiHi for client $SYS class.
		Acknowledged	HiHi acknowledged for client $SYS class.
		Normal	Normal for client $SYS class.
3	Source event
	Alarm ID	Automatically created qualified path that identifies the system event.
	Message	Describes the event and source.
	Class	Client $SYS class.
	Subcondition	System
4	Client alarm
	Alarm ID	Alarm ID in the Client project.
	Message	Defined in the alarm's Alarm Message field.
	Class	Assigned to the alarm in the client project.
	Subcondition	Assigned to the alarm in the client project.

More information

Step 3. Use the OPC Alarm and Event Client and Server at runtime.