Honeywell 301C User Manual page 95

420MDBS_IR-F9 continued
Group
Property
object_identifier
object_type
event_state
object_name
out_of_service
present_value
reliability
status_flags
in_alarm
fault
overridden
out_of_service boolean
units
object_identifier
object_type
event_state
object_name
out_of_service
present_value
reliability
status_flags
in_alarm
fault
overridden
out_of_service boolean
units
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.
Storage
1
Data Type
Required
R
enumerated R
enumerated R
character string R
boolean R
real R
enumerated O
boolean R
boolean R
boolean R
R
enumerated R
R
enumerated R
enumerated R
character string R
boolean R
real R
enumerated O
boolean R
boolean R
boolean R
R
enumerated R
BACnet
2
Writeable?
Type
Modbus address * 256 + 4. For example an
N N 420MDBS at Modbus address 002 will
appear as 516 or 0x0204.
C N analog_value (2)
C N normal (0)
"420MDBS GGGG AdXXX .Amin" where
GGGG is the gas name and XXX is the
N N
Modbus address. Values for gas name
include "NH3".
C N FALSE
Gas threshold from 301C. Synchronization
is maintained with the 301C and the
N Y
420MDBS. Whichever value is written last
is distributed to the other two locations.
C N no_fault_detected (0)
C N always false (0)
C N always false (0)
C N always false (0)
C N always false (0)
Depends on configuration of 420MDBS
C N factory configuration or 301C configuration,
usually ppm (96)
Modbus address * 256 + 5. For example an
N N 420MDBS at Modbus address 002 will
appear as 517 or 0x0205.
C N analog_value (2)
C N normal (0)
"420MDBS GGGG AdXXX .Amin" where
GGGG is the gas name and XXX is the
N N
Modbus address. Values for gas name
include "NH3".
C N FALSE
Gas threshold from 301C. Synchronization
is maintained with the 301C and the
N Y
420MDBS. Whichever value is written last
is distributed to the other two locations.
C N no_fault_detected (0)
C N always false (0)
C N always false (0)
C N always false (0)
C N always false (0)
Depends on configuration of 420MDBS
C N factory configuration or 301C configuration,
usually ppm (96)
95
Value