Rockwell Automation PLC-5 Fieldbus Solutions for Integrated Architecture User Manual - Manual (Page 76)

Publication 1757-UM006A-EN-P - May 2002
2-32 Integrating Fieldbus into Rockwell Automation Logix System
Notification Scheme Fieldbus versus ProcessLogix Alarm Priorities
The Fieldbus alarms are closely integrated with the existing
ProcessLogix notification system. The ProcessLogix Server handles
FIM alarms in the same way it handles Control Processor ones. But,
the fieldbus devices themselves own their alarm data and generate the
alarms, clears, and events.
Fieldbus devices use 0 to 15 as numeric priorities for alarm reporting.
ProcessLogix alarms use Journal, Low, High and Urgent as priorities
with a sub-priority of 0 to 255. Table 2.J shows how fieldbus priorities
are mapped to ProcessLogix priorities and severities.
Table 2.J Mapping Fieldbus Priorities to ProcessLogix
Fieldbus Alarm Priority ProcessLogix Alarm
Priority ProcessLogix Alarm
Severity
0 (Can never be seen by FIM
or above) (Can never be seen by FIM
or above)
1 (Can never be seen by FIM
or above) (Can never be seen by FIM
or above)
2
BLOCK_ERR bit 14
(power-up)
BLOCK_ERR bit 15
(Out-of-Service) Journal
(Event System Only) 2
3
All other bitstring
indications:
(BLOCK_ERR bits 0-13,
XD_ERROR bits 16-25) System Level Diagnostic
(High) 2
2 (User selected) Journal 2
3 Low 3
4 Low 4
5 Low 5
6 Low 6
7 Low 7
8 High 8
9 High 9
10 High 10
11 High 11
12 Urgent 12
13 Urgent 13
14 Urgent 14
15 Urgent 15