ABB COM600 Station Automation Series User Manual page 43

1MRS756125 COM600 Station Automation Series
User's Guide
ACT, SPS, SPC, DPS, DPC, INS or INC. When the objects are inserted to the tool, they
will by default have the alarming states configured according the event definition linked
to the object. If no event definition is linked to an object, it won't have any of the states
as alarming. Alarming states can be manually specified in the tool by checking the cor-
responding check box of the state.
When the objects have been added and the alarm states are configured, accept the con-
figuration by clicking apply.
The logic of the alarm group is configured with the Group Alarm Logic Property of the
object. There are three choices:
•
AND
Alarm group will be active if all signals belonging to the alarm group are active.
Signal changes which does not change alarm group state or quality will not cause
an update in the alarm group object.
• Dynamic OR
Group alarm will be active if any of the signals belonging to the alarm group is
active. Any signal state change will cause an update of the alarm group object even
if the state or quality of the alarm group does not change.
• Static OR
Group alarm will be active if any of the signals belonging to the alarm group is
active. Signal changes which does not change alarm group state or quality will not
cause an update in the alarm group object.
The handling of the source signal quality is configured with the Signal Handling property.
There are three choices:
•
Group Quality Follows Signal Quality
Group alarm will be calculated using only the signals with good/known quality. The
group alarm will have the quality of the signal with the worst quality in the group.
• Unknown Signal StatesTreated As Alarming
If the alarm group contains any signal with bad or unknown quality then the alarm
group will be active. The quality of the group alarm will always be good.
• Unknown Signal States Ignored
Group alarm will be calculated using only the signals with good/known quality. If
no signals have good/known quality then the group alarm will be inactive. The
quality of the group alarm will always be good.
Group Alarm object is an SPS data object, which will have value true when the group
alarm is active and value false when it is inactive. The object can be further used in the
COM600 HMI or it can be forwarded to external systems using the slave protocol cross-
reference tool.
COM600 3.2
43