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Concept
Products:
AS-B, Edge Server, Enterprise Central, Enterprise Server, AS-P, Virtual Project Servers
Functionalities:
Alarms
Product version:
2023, 2024
12/16/2022
Change of State Alarms
The change of state alarm monitors the state changes of digital variables. You configure the alarm to trigger when the variable changes its state to true or to false.
Figure:
Change of state alarm when the monitored variable goes true
Figure:
Change of state alarm when the monitored variable goes false
For example, you set up a change of state alarm that monitors a ventilation fan. If the fan breaks or stops working, the alarm is triggered.
You can configure the change of state alarms using shunt variable and time delay. For more information, see Alarm Functions .
Alarm Types
Alarms Overview
Alarm Functions
Change of State Alarm Properties – Basic Tab
Creating a Change of State Alarm