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 |