Ref.no.: 003274/Revision 2.4 @2019 Control Data Systems Page 88
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Figure 6.2.23 Alerts window (ISA 100)
Two types (classes) of alerts are supported in accordance with the ISA100.11a specification:
•
Events – indicates that something happened with the device;
•
Alarms – indicates that a device has transitioned to an abnormal state or has returned to normal
from an abnormal state; an alert is sent to describe the change of state.
To search for alerts you must perform the following actions:
•
select the
Device
, the alert
Category
,
Priority
and
Class
of alert;
•
optionally, fill in the
Start Time
and the
End Time
fields, and then click
Search
.
The results are displayed in a table depicted in the previous screen capture (
Figure 6.2.23
) that indicates
the following information:
•
EUI-64 Address
– the MAC address of the device generating the alert;
•
TsapID
and
ObjID
– identification of the application process and the associated object that
initiated the alert;
•
Time
– the date and time when the alert condition was detected;
•
Class
– the type of alert (alarm or event);
•
Direction
– with the following values:
o
Start/End
– only for alarms, it indicates if the report is for an alarm condition, or a return
to normal from an alarm condition;
o
N/A
– if the alert reports an event;
•
Category
– device diagnostic, communication-related, security-related, or process related;
•
Priority
– indicates the importance of the alert, with the following ranges and associated labels,
in compliance with the specification:
o
0 - 2: Journal-only;
o
3 - 5: Low;