Network variables – Echelon Mini FX User Manual
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18
Introduction
Field Description
manufacturer ID, you can find your ID in the list of
manufac
most
current list at the time of release of the Mini kit is also
included with the Mini kit software.
• Temporary manufacturer IDs are available at no charge
to anyone on request by filling out a simple form at
Device Class (C)
A 4 hex-digit value identifying the primary function of the
device. This value is drawn from a registry of pre-defined device
class definitions. If an appropriate device class designation is
not available, L
ON
M
ARK
International Secretary will assign one,
upon request.
Usage (U)
A 2 hex-digit value identifying the intended usage of the device.
The upper bit specifies whether the device has a changeable
interface. The next bit specifies whether the remainder of the
usage field specifies a standard usage or a functional-profile
specific usage. The standard usage values are drawn from a
registry of pre-defined usage definitions. If an appropriate
usage designation is not available one will be assigned upon
request. If the second bit is set, a custom set of usage values is
specified by the primary functional profile for the device.
Channel Type (T) A 2 hex-digit value identifying the channel type supported by
the device’s L
ON
W
ORKS
transceiver. The standard channel-type
values are drawn from a registry of pre-defined channel-type
definitions. A custom channel-type is available for channel
types not listed in the standard registry.
Model Number
(N)
A 2 hex-digit value identifying the specific product model.
Model numbers are assigned by the product manufacturer and
must be unique within the device class, usage, and channel type
for the manufacturer. The same hardware may be used for
multiple model numbers depending on the program that is
loaded into the hardware. The model number within the
program ID does not have to conform to your published model
number.
See the
for more information about program IDs.
Network Variables
Applications exchange information with other L
ON
W
ORKS
devices using network
variables. Every network variable has a direction and a type. The network variable
direction can be either input or output, depending on whether the network variable is
used to receive or send data. The network variable type determines the format of the
data.
Network variables of identical type but opposite directions can be connected to allow the
devices to share information. For example, an application on a lighting device could have