Device Class File Format

An IzoT device class file is an XML document that the IzoT Server uses to map an IzoT application interface to the IzoT REST interface for a specified program ID. When a device is discovered, the IzoT Server searches the etc/lonbridge/classes directory for a device class file with a matching program ID.

The following table lists the XML elements contained in a device class file.

Element	Description
<attribute>	Defines the attributes for a device.
<attributes>	Container element for the device attributes that are present on the device.
<byte>	Defines the fields within a datapoint.
<device>	Defines the device class, and is the top-most element within a device class file.
<enum>	Enumerates each datapoint defined for an <attribute> element.
<nv>	Defines the bytes that are sent on the IzoT network for a datapoint update to or from the device.
<nvs>	Container element for the datapoints defined for each <attribute> element.

This section consists of the following: