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Honeywell 301C User Manual
IAQPoint2
77
Data Type
Required
1
Storage
Type
2
BACnet
Writeable?
Value
object_identifier
R
C N
Modbus address * 256 + 1. For example an
IAQPoint2 at Modbus address 005 will
appear as 1281 or 0x0501.
object_type enumerated R
C N
analog_input (0)
event_state
enumerated R R N
if gas sensor fault Fault (1),
else normal (0)
object_name character string R N N
"IAQPoint CO2 AdXXX.CO2" where XXX is
the Modbus address.
out_of_service boolean R R N FALSE
present_value
real R R N
Gas reading
if CO2 fitted, 0 to 5000
if VOC fitted, 0 to 100
IAQPoint CO2
reliability enumerated O R N
As appropriate reports
no_fault_detected (0) or
no_sensor (1) or
unreliable other (7)
Fault is detected within 60 seconds
status_flags
in_alarm boolean R R N
if faulty "true" (1)
else "false" (0)
fault boolean R R N
if faulty "true" (1)
else "false" (0)
overridden boolean R R N "false" (0)
out_of_service
boolean R R N "false" (0)
units
enumerated R N N
if CO2 fitted, ppm (96)
if VOC fitted, % (98)
object_identifier R C N
Sensor number * 256 + 1. Sensor number
for temperature is Modbus address + 1. For
example an IAQPoint2 at Modbus address
005 will appear as 1537 or 0x0601.
object_type enumerated R C N analog_input (0)
event_state
enumerated R R N
if temp sensor fault, fault (1),
else normal (0)
object_name character string R N N
"IAQPoint ToC AdXXX.ToC" where XXX is
the Modbus address plus one.
out_of_service
boolean
R R N FALSE
present_value
real R R N
Temperature reading in Celcius, regardless
of IAQPoint2 configuration.
reliability enumerated O R N
As appropriate reports
no_fault_detected (0) or
no_sensor (1) or
unreliable other (7)
Fault is detected within 60 seconds
status_flags
in_alarm boolean R R N
if not purchased or faulty "true" (1)
else "false" (0)
fault boolean R R N
if not purchased or faulty "true" (1)
else "false" (0)
overridden boolean R C N False (0)
out_of_service
boolean R R N "false" (0)
units
enumerated R N N Celcisus (62)
Notes
1 -- 'R' indicates that this property is required by ASHRAE Standard 135
'O' indicates that the property is optional in ASHRAE Standard 135
2 -- 'C' indicates the property is hard-coded as a constant
'N' indicates the property is stored in non-volatile memory
'R' indicate the property is computed constantly and stored in RAM.
Group Property
IAQPoint ToC
Analog Inputs