Honeywell XI581AH User Manual page 56

Buswide operator interface
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ALPHABETIC REFERENCE
EN2B-0126 (74-3554-8)
Typical Attribute
User Address
Descriptive name for the point. The user address can describe the type of
point and/or its physical location.
Status
Current point status, for example, Off or On. Digital points, only.
Value
Point value such as temperature. Analog and totalizer points, only.
Operating Mode
Whether the point is operated manually or whether the controller operates it
automatically.
Pulse Duration
Number of energy units the point outputs before it sends a pulse of
information to the controller. Totalizer points, only.
Trend Logging
Whether or not the point's activity (such as the number of times it switches
on and off) is recorded in the trend log.
Technical Address Numerical address of the point, corresponds to input or output on the board
where the signal is connected.
Accumulated
Number of hours the point has run since it was last serviced. Digital points,
Runtime
only.
Alarm Stat. Chngd. Time and date that the controller last issued an alarm for this point.
Interval Limit
How often (in energy units) the point should be serviced. Totalizer points,
only.
Service Interval
How often (in hours) the point should be serviced. Digital points, only.
Hours Since
Hours since the point was last serviced. Digital points, only.
Serviced
Last Changed
Time and date that the status of the point last changed (the last time the
point switched ON or OFF). Digital points, only.
Cycle Count
Number of times the point was switched OFF or ON since it was last
serviced. Digital points, only.
Suppress Alarm
Whether the controller reports the alarms it generates for this point. If a
point cannot report, the controller no longer reads its inputs or sets its
outputs.
High and Low
Point value limits. If the point exceeds these limits, the controller generates
Warning and
an alarm.
Alarm Limits
Time to Open,
Time (in seconds) for an analog output to cycle open or closed. Analog
Time to Close
output points and three-position output points, only.
Sensor Offset
Offset value that software adds to adjust point value. Analog input points,
only.
Trend Hysteresis
Data point value must change positively or negatively by at least this
amount to be written into trend buffer.
Trend Cycle
Nonzero value enables time-based trending. A value is logged at the
interval specified in Trend Cycle (1440 minutes max.).
Alarm Hysteresis
Change must exceed this minimum value before an alarm is generated.
Normally Open /
Defines relationship between the physical signal of a data point and its
Normally Closed
logical status.
See Also ⇒
Excel CARE User Guide for more details about the various types of points and point
attributes (in the "Editors" section)
Some digital and analog points may be mapped to L
(NVs) and are not assigned to any I/O board. In this case, the technical address is
XI581/2 BUSWIDE OPERATOR INTERFACE
Table 8. Typical Point Description Attributes.
Description
52
Mapped Points
W
network variables
ON
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