Status variable
Alarm
The status of an alarm can be read out as a combination of three bits in the status variable. Writing to the status variable has no influence on the status of the alarm (see also Alarm statuses).
Alarm group
The status variable indicates whether there are still active alarms or alarms to be acknowledged in the alarm group. The value written to the status variable by the alarm system takes up 3 bits. The content is bit-coded:
|
Bit |
Description of the |
|---|---|
|
0 |
The alarm group contains one or more alarms that are to be acknowledged but whose event bits have already been reset. |
|
1 |
The alarm group contains one or more active acknowledged alarms (the event bit is set, the alarm has been acknowledged). |
|
2 |
One or more alarms are active in the alarm group (the event bit is set, the alarm has not been acknowledged). |
Parameters for module: