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AVEVA Enterprise SCADA

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Rate Row Edit: Inhibits tab

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  • Last UpdatedApr 24, 2025
  • 2 minute read

The Inhibits tab in the rate Row Edit dialog box allows you to inhibit events and alarms cause by state changes such as change of state from normal to off-normal and vice versa. In addition, you can inhibit alarms on a per-state basis.

The Controller can also inhibit alarms generated from analog, rate, and status records through the points’ easy eXtended Operator Station (ezXOS) Control dialog boxes. For remote records, the Controller can put a remote offscan but cannot actually disable alarming for all points.

While you can inhibit alarm generation through ezXOS, only the System Administrator can inhibit event logging through the Advanced Database Editor (ADE).

The following table lists conditions that determine normal and off-normal states.

Normal and Off-normal State Determinants

Table

Condition/Determinant

Analog

Analog alarm limits (refer to Alarm Limits).

Connection

Alarms that are usually related to the following:

  • Modem failure (connection lost, unable to establish connection).

  • Configuration errors (cannot assign device).

  • Dialup line communication errors.

Rate

Rate alarm limits (refer to Alarm Limits).

Remote

No-reply timeouts, security errors, short messages, and illegal messages. (Normal alarms are generated and logged.)

In the analog record, the analog alarm limits configured in the Alarming tab determines the Normal and Off-normal states. Refer to the table below for field descriptions and instructions on how to configure the editable fields.

Items on the Inhibits Tab in the Rate Row Edit Dialog Box

Items

Description

Off-Normal Alarm

Select to inhibit off-normal alarming. The system will not generate an alarm when the point changes from a normal state to an off-normal state.

Normal Alarm

Select to inhibit normal alarming. The system will not generate an alarm when the point change from an off-normal state to a normal state.

Off-Normal Log

Select to inhibit off-normal logging. The system will not log an event when the point changes from a normal state to an off-normal state.

Normal Log

Select to inhibit normal logging. The system will not log an event when the point change from an off-normal state to a normal state.

State Alarming Inhibit

Select the states on which to inhibit alarms.

For information on Rate Reasonability Inhibit, refer to Rate Reasonability.

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