20
Network
Initialization
of LonWorks
Option Card
LonMark
Drive Profile
A LonMark external interface file (.XIF
extension) provides the host processor with
device information. With this, it is possible
to design a LonWorks network without the
drive being physically present. The resource
file is available for downloading from the
Trane website at
, or contact Trane GCC Product
Support.
The drive may also be added to the network
upon initialization.
The LonWorks option card contains a NEURON
chip with a unique address. After hardware
installation, initialize the LonWorks option card
by using a Tracer Summit BCU or Rover
running in active mode. Addressing nodes on
the LonWorks network is performed at
installation time by an installation tool or
network management tool. Addressing
requires the retrieval of a node’s NEURON ID.
The NEURON ID is a 48 bit number that identifies
every manufactured NEURON chip. There are
several methods by which the network
software will initialize the drive automatically.
The network can recognize the drive without
action beyond proper installation. The card is
then ready to be programmed for network
operation. The TR1 LonWorks option supports
three additional methods of addressing a node:
1. Service Pin - There are two
momentary-contact service switches that
send the NEURON ID over the network. If the
network software prompts the action, press
either service pin (SW1 or SW3) to transmit
the NEURON ID over the network. The service
pin locations are shown in the illustration in
Terminator and Service Switch Locations in
this manual.
2. Query and Wink - The LonWorks option
card is shipped with a domain of “0” and
subnet of “1.” Upon receiving the wink
command, the on-board green status LED
flashes so that the installer can locate the node.
The chip sends out its Neuron ID over the
network in response to the query command.
3. NEURON ID Label - The TR1 LonWorks
option card has a NEURON ID label that displays
the NEURON ID as a 12 digit hexadecimal
number. The installer can manually enter the
NEURON ID during installation.
The TR1 LonWorks network interface consists
only of SNVTs. The SNVTs support the
LonMark Controller Profile along with TR1
configuration, control and monitoring
capabilities. Any combination of SNVTs can be
used to operate the TR1.
Also supported is the functional profile for variable
speed drives from the LonMark Interoperability
Association at
. This profile defines a
set of network variables (SNVTs) and
configuration properties (SCPTs).
