Step 3. Configure an Alarm String Index Set


1	Alarm string index
2	String values
3	Severity
4	Example 1
5	Example 2

1. Alarm String Index

Alarm string identification.

New alarm string sets
The next available number displays in the Alarm string index field when the alarm string is created. The field is read/write.
If the default number is changed, the new alarm string index number:
- Must be from 1 to 99 and
- Cannot conflict with an existing Alarm String Index.

Existing alarm string sets
The Class ID field is read-only for previously created alarm string sets.
The index number is selected for an alarm to associate an alarm string set with that alarm.

2. String Values

Values for each of the following fields can contain up to 16 characters.

Alarm high

Warning high

Warning low

Alarm low

Normal

The value you enter for an alarm string index:

Corresponds to Normal and Alarm State levels in the Alarm Class Configuration dialog box.
Displays on the Alarm tab in the Point Properties dialog box when the string index is selected.
Displays when specified as %STATE in a point's alarm message when the point is in the related alarm state.

3. Severity

A number from 1 through 1000. The higher the number the more severe the alarm is considered. CIMPLICITY treats more severe alarms with a higher priority.

Note: The Severity for the Alarm String Index must conform to the OPC UA specification guidelines. If you are using Web HMI with CIMPLICITY, be sure to read the "Alarm Microservice" topic or search for "alarm severity" in the Web HMI documentation. It's important to configure this severity correctly so that you get the results that you want to see in Web HMI. For example, events of high urgency can be mapped into the OPC severity range of 667-1000, events of medium urgency can be mapped into the OPC severity range of 334 to 666, and events of low urgency can be mapped into the OPC severity of 1 to 333.

Note: You can select and display the Severity in the Alarm Viewer.

This example shows how the alarm string value for alarm string index 2 displays in the Alarm Viewer Message field.


1	String values are entered in the Alarm String Index dialog box.
	String field	Value
	Alarm high	Too Full
	Warning high	Almost Full
	Warning low	Almost Empty
	Alarm low	Empty
	Normal	NORMAL

2	A	%STATE in the Alarm message displays the string values for the selected alarm string set.
	B	String index 2 is selected.
	C	Alarm limit fields correspond to the selected string index values.
		String Value	Alarm Limit
		Too Full	Too Full
		Almost Full	Almost Full
		Almost Empty	Almost Empty
		Empty	Empty

3		Message is selected as a field in an Alarm Viewer configuration. The Alarm Viewer displays the alarm string values for every point that includes `%STATE` in the alarm message.

This example shows configurations for the Alarm String 2 index severity displays in the Alarm Viewer.


1	An alarm severity is entered for each string value in the Alarm String Index dialog box.
	String value			Severity
	Too Full			250
	Almost Full			200
	Almost Empty			200
	Empty			250
	NORMAL			0
2	The selected string index is 2. The alarm limits fields correspond to the string index 2 values. The fields inherently include the severity levels defined for the alarm string set.
	String value			Alarm limit
	Too Full			Too Full
	Almost Full			Almost Full
	Almost Empty			Almost Empty
	Empty			Empty
3	Class and Severity are selected as fields in an Alarm Viewer configuration.
4	The Alarm Viewer displays the class and severity.
	Class	NORTH
	Severity	Value corresponds to each level.
	Severity value		Corresponds to
	275		HiHi and LoLo
	200		Hi and Lo
	Note: Foreground and background colors for each alarm correspond to the alarm class configuration.