The limit alarms feature
- Last UpdatedDec 17, 2024
- 2 minute read
Select the Limit alarms Feature to add and configure a Limit Alarm on an attribute of Integer, Float, or Double data type. You can add a Limit alarm Feature to a template or instance. If added to a template attribute, the Limit alarm Feature is automatically locked in derived objects. Limit alarm Features cannot be added to attribute arrays.
You can enable up to four categories of Limit alarms. When enabled, alarms will be triggered when the value reaches the configured limit.
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HiHi
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Hi
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Lo
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LoLo
For each Limit alarm, specify the following parameters:
|
Limit Alarm Feature Parameters |
Description |
|---|---|
|
Limit |
The limit that the attribute value must exceed to trigger an alarm. Enter the limit value for each enabled Limit alarm category. |
|
Priority |
A numeric value for the urgency of the alarm. Valid values are 1 through 999, with 1 being the most urgent. For more information about pre-configuring alarm priorities, see Configure priority ranges for alarm historization, mapping, and shelving . |
|
Alarm message |
Browse and select an existing attribute or type a text string as an alarm message. This text string appears in the InTouch alarm view. |
|
Alarm deadband |
The amount, in engineering units, that the attribute value must exceed the configured HiHi, Hi, Lo, or LoLo limit before an alarm is triggered. |
|
Time deadband |
The time, in seconds, that must elapse after the attribute value exceeds an alarm limit before the alarm is triggered. |
For additional information, see Configure limit alarms.