FB_BA_AlarmMgnr
The alarm manager function block collects the alarms of all plants and pools them in a group alarm.
Internally, it passes on the system time to the plants and the associated alarm output function blocks, so that a timestamp can be output in the event of an alarm.
The alarm manager is the link between all alarms of a controller and their representation in the target visualisation. The display of the alarms in the target visualisation is automatically created with the template BAC_GenAlm_01.
Inputs/outputs
VAR_INPUT
dtSysTime : DT;
sName : STRING;
bAckn : BOOL;
dtSysTime: System time used as timestamp in the event of an alarm. It is internally passed to the plants FB_BA_AlarmPlt and the associated alarm output function blocks FB_BA_Alarm.
bAckn: Input for central alarm acknowledgement of all plants. This acknowledgement is internally passed to the alarm output function blocks FB_BA_Alarm.
VAR_OUTPUT
bCriticalAlm : BOOL;
bNewAlm : BOOL;
bInAlm : BOOL;
bCriticalAlm: critical alarm within a plant. This is used in the templates for switching off a plant. To this end, the input byPrio in the alarm output function block FB_BA_Alarm must have the value 4.
bNewAlm: shows the new value message of an alarm within a plant.
bInAlm: indicates that an alarm is active within a plant.
Requirements
Development environment | Target system | required library | required supplement |
|---|---|---|---|
TwinCAT 2.11 R3/x64 | PC/CX | TcBA library from V1.0.0 | TS8040 | TwinCAT Building Automation from V1.0.0 |