Device resource files – Echelon LNS User Manual

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LNS Programmer's Guide

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Table 6.1 Program ID Format

Program ID Segment

Description

This represents the format identifier.

This will be set to 8 for LonMark certified

interoperable devices,
9 for draft (not certified) interoperable

devices, or a value less than 8 for non-

interoperable devices. Note that the
LonMark Interoperability Association

has reserved format identifiers 0xA..0xF

for future use.

M:MM:MM

A series of 5 hexadecimal digits

identifying the device manufacturer.

Manufacturer IDs are unique to the

manufacturer of certified interoperable
devices

CC:CC

A series of 4 hexadecimal digits that

describe the class and primary function
of the device.

2 hexadecimal digits describing the

device’s usage within its class. This is

also known as the device’s subclass.

2 hexadecimal digits identifying the

physical channel type the device can be

used with.

2 hexadecimal digits representing the

device model number.

Note: The first five fields described in Table 6.1 are allocated by the LonMark

Interoperability Association.

Device Resource Files

While the device interface file details all the network variables, configuration properties

and LonMark Functional Blocks initially available on a device, the interface does not
specify the internal structure of these elements.

A network variable defines an operational input or output for the device. Each network

variable is assigned a network variable type, which determines the structure, range, base

units, and scaling factors that the network variable uses.

A configuration property specifies a configuration option for a network variable, a

LonMark Functional Block, or the entire device. Each configuration property is assigned
a configuration property type, which defines the structure, range, base units, and scaling

factors that the configuration property uses.

Each network variable and configuration property is also assigned one or more format

specifications. Alternate format specifications can be supplied to provide unit conversion