Honeywell ALERTON ACM-AXM - Page 82

Installation and Operations Guide
|
ACM-VLX/VLX/EXP/AXM
82
© Honeywell. All Rights Reserved. LT-VLXEXPAXMIOG Rev. 01
Properties of VLX/ACM-VLX AV objects
out-of-s e rvice

Boole an FALS E TRUE de couple s the pres e nt-value prope rty from the
physical output. While TRUE, the pres e nt-value can be
change d to any value to s imulate conditions for te s ting
without affe cting the actual phys ical output.
present-value

REAL 75 Valid values are re al numbe rs in the range 0–100.
Values greater than 100 are interpreted as 100. When
commande d, values are writte n to the present-value
with a priority for writing, which corres ponds to a
priority-array index (s e e “priority-array” he rein).
priority-array

BACne t
PriorityArray
<Array of
BACne t
P rio rityVa lue >
An array of prioritize d value s (inde xe s 1-16) controlling
the present-value , inde x 1 having the highe s t priority.
The value with the highest priority for writing controls
the pre s e nt-value . Pos s ible value s for priority-array
inde xe s are real values or NULL. A NULL value
indicate s no command is iss ue d at that priority le ve l.
reliability BACne t_ Re liability NO FAULT
DETECTED
Othe r possibilitie s are OVER RANGE, UNDER
RANGE, UNRELIABLE_OTHER.
relinquis h-de fault

REAL 0 Default value to be us e d for present-value prope rty
when all priority-array inde xe s are NULL.
status -flags Bit s tring In alarm = 0,
fault = 0,
ove rridden =
0, out of
se rvice = 0
A four-pos ition bit s tring that indicate s the status of the
obje ct. If a s tatus bit =1, that status is TRUE.
units

Enumerated % Indicates the AO’s unit of me as ure in BACnet
e ngine e ring units .
Table 28 P rope rtie s o f VLX/ACM-VLX AV o bje c ts
Prope rty W Type Example Re marks
cov-incre me nt

Real If the pre s e nt-value change s by this amount or gre ater,
a change -of-value notification is s e nt to s ubs cribe d
devices. Not us e d at pre s e nt.
de s cription

Characte r string Occupie d
Setpoint
A de s cription as s igne d to de s cribe the obje ct’s function.
e ve nt-s tate Enumerated Normal
obje ct-ide ntifie r BACne t_ Object_
Id e n tifie r
AV 1 This prope rty cons ists of the object-type prope rty and
the object instance , which is a nume ric code that
identifies the object of interest.
obje ct-name

ACM
-VLX
Characte r string For re s e rve d AVs , shows the EXP and AV of inte re s t.
For e xample , EXP 0 AV 01/AXM 0 AV 01. Otherwis e
shows AV <instance >. The Obje ct Name prope rty is
writable whe n us ing the ACM-VLX only and not in the
VLX/VLX-Platinum.
obje ct-type Enume rate d AV
out-of-s e rvice Boole an FALS E
present-value

Real 76.4
Range is3 x 10
38
(six significant digits of re s olution)
Table 27 Prope rtie s of VLX/ACM-VLX AO objects (Continue d)
Prope rty W Type Example Re marks