
Table J-3: Alarm Level Priority
Priority Number
Priority Description
0
The priority of an alarm condition changes to 0 after the
condition that caused the alarm is corrected.
1
An alarm condition with a priority of 1 is recognized by
the system, but is not reported to the operator.
2
An alarm condition with a priority of 2 is reported to the
operator, but does not require operator attention (such
as diagnostics and system alerts).
3-7
Alarm conditions of priority 3 to 7 are advisory alarms of
increasing priority.
8-15
Alarm conditions of priority 8 to 15 are critical alarms of
increasing priority.
J.7.1
Status handling
Normally, the status of the PV reflects the status of the measurement value, the operating
condition of the I/O card, and any active alarm condition. In Auto mode, OUT reflects the
value and status quality of the PV. In Man mode, the OUT status constant limit is set to
indicate that the value is a constant and the OUT status is Good.
The Uncertain - EU range violation status is always set, and the PV status is set high- or low-
limited if the sensor limits for conversion are exceeded.
In the STATUS_OPTS parameter, you can select from the following options to control the
status handling:
BAD if Limited
Sets the OUT status quality to Bad when the value is higher or
lower than the sensor limits.
Uncertain if Limited
Sets the OUT status quality to Uncertain when the value is
higher or lower than the sensor limits.
Uncertain if in
Manual mode
The status of the Output is set to Uncertain when the mode is
set to Manual.
Note
The instrument must be in Manual or Out of Service mode to set the status option. The AI
block only supports the BAD if Limited option. Unsupported options are not grayed out;
they appear on the screen in the same manner as supported options.
J.8
Advanced features
The AI function block provided with Fisher
™
-Rosemount
™
fieldbus devices provides added
capability through the addition of the following parameters:
ALARM_TYPE
Allows one or more of the process alarm conditions detected by the AI
function block to be used in setting its OUT_D parameter.
Reference Manual
Analog-Input Block
00809-0100-4530
April 2019
Reference Manual
465
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