Analog Alarm

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Analog Alarm

Allows monitoring an analog variable by specifying up to four alarm levels, which are LoLo (Very Low), Lo (Low), Hi (High), and HiHi (Very High).

Analog tab

Analog tab

The available options on this tab are described on the next table.

Available options for the Analog tab

Option

Description

Subcondition

Name of this alarm's sub-condition. Available options are LoLo, Lo, Hi, or HiHi

Enabled?

Enables checking the selected alarm's sub-condition

Limit

Indicates a level in which this alarm's sub-condition is triggered

Message Text

Allows specifying a text displayed to users when this alarm's sub-condition is active

Severity

Determines a severity for this alarm's sub-condition. Available options are Critical, High, Medium, or Low

Need Ack?

Enables or disables the acknowledgment of this alarm's sub-condition

Event?

Enables or disables handling this alarm's sub-condition as an event

Allow shelving?

Enables or disables shelving this alarm's sub-condition

Shelve maximum duration

Maximum time, in minutes, this alarm's sub-condition can remain shelved. Default value of this option is 60 (one hour)

Maximum shelve count

Maximum number of times this alarm's sub-condition can be shelved. Default value of this option is 0 (zero), that is, no limit

Delay (ms)

Specifies a delay time, in milliseconds. When this value is equal to 0 (zero, default), no delay is applied

Deadband

Enables a dead band, which is a feature used to avoid a variable, when oscillating around an alarm's limit, to generate an unnecessary number of messages

Return message

Allows specifying a text displayed to users when this alarm is not in an active condition

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