Honeywell 301C User Manual
Modbus address * 256 + 4. For example an
420MDBS at Modbus address 002 will
appear as 516 or 0x0204.
object_type enumerated R C N
event_state enumerated R C N
object_name character string R N N
"420MDBS GGGG AdXXX.Amin" where
GGGG is the gas name and XXX is the
Modbus address. Values for gas name
include "NH3".
out_of_service boolean R C N
Gas threshold from 301C. Synchronization
is maintained with the 301C and the
420MDBS. Whichever value is written last
is distributed to the other two locations.
reliability enumerated O C N
status_flags
in_alarm boolean R C N
out_of_service boolean R C N
Depends on configuration of 420MDBS
factory configuration or 301C configuration,
usually ppm (96)
Modbus address * 256 + 5. For example an
420MDBS at Modbus address 002 will
appear as 517 or 0x0205.
object_type enumerated R C N
event_state enumerated R C N
object_name character string R N N
"420MDBS GGGG AdXXX.Amin" where
GGGG is the gas name and XXX is the
Modbus address. Values for gas name
include "NH3".
out_of_service boolean R C N
Gas threshold from 301C. Synchronization
is maintained with the 301C and the
420MDBS. Whichever value is written last
is distributed to the other two locations.
reliability enumerated O C N
status_flags
in_alarm boolean R C N
out_of_service boolean R C N
Depends on configuration of 420MDBS
factory configuration or 301C configuration,
usually ppm (96)
'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.
95
