A.4 LONWORKS COMMUNICATIONS BOARD
WhenttedtoaTransmitterUnittheLonWorkscommunicationsboardprovidesaninterface
between the unit and an open LON standard network.
The board consists of a Neuron micro-processor and associated memory and logic interface
components.IsolationtothenetworkandcorrectsignallevelsareprovidedbyanFTT-10A
transceiver device.
A.4.1 LonWorks Network Variables
The LIFELINE II gas detector has fourteen Network variable outputs, two network variable inputs
andfournetworkcongurationinputsasshowninthefollowingLonMarkObjectDiagram.
Some or all of these may be bound to a LonWorks network. Descriptions of each variable are given
in the subsequent sub-sections. For more information consult Honeywell Analytics.
nviRequest nvoFaultD
nvoFaultS
nvoStatus
Node Object
nviResetAlm nvoAlm2
nvoAlmL
nvoAlmThresh1
nvoAlmThresh2
nvoCellLife
nvoCellType
nvoConc
nvoConcFS
nvoConcType
nvoLastCal
nvoNextCal
Open-Loop Sensor Object
nciAlarmSetT
nciHighLim1
nciHighLim2
nciMaxSendT
Virtual Function Block
(SNVT_lev_disc)
(SNVT_lev_disc)
(SNVT_lev_disc)
(SNVT_ppm_f)
(SNVT_lev_disc)
(SNVT_obj_request)
(SNVT_switch)
(SNVT_obj_status)
(SNVT_ppm_f)
(SNVT_ppm_f)
(SNVT_ppm_f)
(SNVT_elapsed_tm)
(SNVT_ppm_f)
(SNVT_elapsed_tm)
(SNVT_elapsed_tm)
(SNVT_str_asc)
(SNVT_str_asc)
(SNVT_ppm_f)
(SNVT_elapsed_tm)
(SNVT_elapsed_tm)