Standard Object Support - Trane LonWorks



TR1 Series VFD Installation And Operation Manual

Standard
The TR1 LonWorks option supports two
Object standard objects and three SNVTs, per the
LonMark standard object philosophy. The
Support
standard objects are the Node Object
(containing the Object request, Object status,
and Object alarm) and the Controller object,
(containing the network variables described in
the preceding sections). The Object request is
a LonMark device used to obtain status and
alarm information from a node.
It is not necessary for a controller to support
the Node Object network variables. The Object
request, Object status and Object alarm
provide status and alarm information for
controllers that only support this type of
functionality. The status and alarm functions
described in the preceding sections contain
more drive specific information than Object
status and Object alarm.
1. The TR1 sends an Object status
Function
Object request
Object status
Object alarm
containing drive status information and
an Object alarm containing fault
information in response to the
following Object requests:
RQ_NORMAL,
RQ_UPDATE_STATUS, and
RQ_UPDATE_ALARM.
SNVT type
SNVT_obj_request
SNVT_obj_status
SNVT_alarm
Network Variables for Node Object Support
The nviRequest.object_id should be set
to "1" (controller node). The network
uses nviRequest, nvoStatus and
nvoAlarm variables for these functions.
2. The TR1 sends an Object status
containing a bit map of supported
status fields in response to all other
Object requests, including undefined
requests.
3. The TR1 Object status supports the
following status fields: invalid_id,
invalid_request,open_circuit,
out_of_service, electrical_fault,
comm_failure, manual_control, and
in_alarm. All other fields are always
set to "0."
4. The TR1 sends an Object alarm
following any set or reset of a drive
fault condition.
5. The Object alarm supports the
AL_ALM_CONDITION and
AL_NO_CONDITION alarm types.
Variable Name Input/Output
nviRequest Input
nvoStatus Output
nvoAlarm Output
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