User Manual

Alarm management

Alarm suppression

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9.10 Alarm suppression

Alarm suppression refers to suppression of alarm and event notifications in the

Desigo system. Thus, sending BACnet event notifications is suppressed. Alarm

suppression does NOT prevent detection of alarm states.

Alarm suppression types

The following types of alarm suppression exist in Desigo:

● Alarm suppression by automation station using function block AS_STA

allows for implementing alarm suppression at the automation station level.

● Hierarchical alarm suppression is made possible via the common alarm

object based on the structure of the technical view.

● Specific alarm suppression: All alarmable objects offer alarm suppression

by object.

● Exceptions for alarm suppression: Each alarmable object has a pin SupEcpt.

This pin allows for defining exceptions to hierarchical alarm suppression.

Validity for alarm suppression

All types of alarm suppression apply to Desigo PX. Desigo room automation

devices can generate and suppress alarms.

Alarm suppression by automation station

AS_STA (Device Access) is a Desigo PX function block that allows to suppress

all alarms of an automation station. The function block allows for suppressing

BACnet event notifications by means of an application. Thus, sending of alarms

and events during, e.g., maintenance, can be suppressed, e.g., via a key switch.

Alarm suppression is controlled via pin SupEvt. The following values are defined

for SupEvt:

● true: The automation station sends NO BACnet event notifications.

● false: The automation station sends BACnet event notifications.