Rosemount OCX 8800, Инструкция по эксплуатации

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Instruction Manual
IM-106-880, Rev 2.1
April 2017
OCX 8800
7-29
Alarms are grouped into five levels of 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.
10-15 Alarm conditions of priority 8 to 15 are critical alarms of increasing priority.
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.
NOTE
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.