What does the online status of a data source show?

The online status is determined from the time of the last data transmission and an alert definition assigned to the device, which determines the interval at which it can be assumed that a device is offline.

Example:

In the alert definition, it is defined that the device is considered offline if it has not supplied any data for 2 hours. A warning should be issued after 1 hour.

A device has now not sent any data for 65 minutes. According to the alert definition, a service alarm is generated with a warning that this device could be offline.

If it continues to not send data, another service alert is generated after 2 hours with the message that this device is offline.