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Honeywell 301C User Manual
EC-FX
Group Property Data Type
Required
1
Storage
Type
2
BACnet
Writeable?
Value
object_identifier R C N
Modbus address * 256 + 1. For example an
EC-F9 at Modbus address 003 will appear as
769 or 0x0301.
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
"EC-F9 GGGG AdXXX.GGGG" where GGGG
is the gas name and XXX is the Modbus
address. The gas name is often "NH3".
out_of_service boolean R R N
FALSE
present_value real R R N
Gas reading
analog_input
gas
reliability enumerated O R N
As appropriate reports
no_fault_detected (0) 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
Usually ppm (96)
object_identifier R N N
Modbus address * 256 + 2. For example an
EC-F9 at Modbus address 003 will appear as
770 or 0x0302.
object_type enumerated R C N
analog_value (2)
event_state enumerated R C N
normal (0)
object_name character string R N N
"EC-F9 GGGG AdXXX.Amin" where GGGG is
the gas name and XXX is the Modbus
address. The gas name is often "NH3".
out_of_service boolean R C N
FALSE
present_value real R N Y
Gas threshold. Synchronization is
maintained with the 301C and the EC-F9.
Whichever value is written last is
distributed to the other two locations.
reliability enumerated O C N
no_fault_detected (0)
status_flags
in_alarm boolean R C N
always false (0)
fault boolean R C N
always false (0)
overridden boolean R C N
always false (0)
out_of_service boolean R C N
always false (0)
units enumerated R C N
Usually ppm (96)
object_identifier R N N
Modbus address * 256 + 3. For example an
EC-F9 at Modbus address 009 will appear as
771 or 0x0303.
object_type enumerated R C N
analog_value (2)
event_state enumerated R C N
normal (0)
object_name character string R N N
"EC-F9 GGGG AdXXX.Amax" where GGGG is
the gas name and XXX is the Modbus
address. The gas name is often "NH3".
out_of_service boolean R C N
FALSE
present_value real R N Y
Gas threshold. Synchronization is
maintained with the 301C and the EC-F9.
Whichever value is written last is
distributed to the other two locations.
reliability enumerated O C N
no_fault_detected (0)
status_flags
in_alarm boolean R C N
always false (0)
fault boolean R C N
always false (0)
overridden boolean R C N
always false (0)
out_of_service boolean R C N
always false (0)
units enumerated R C N
Usually ppm (96)
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.
continued…
Analog Values
Amin
Amax
90