6.5.3 Forms Terms
The OPC UA binding does not need mandatory UA specific forms terms, the default forms terms from WoT Thing Description can be reused. Associated NodeId information for an interaction affordance (properties or actions) are reflected by the corresponding href as specified in 6.2..
The UA services are expressed by the TD op term and its corresponding values. In the following, the op values will correspond the following OPC UA Services:
| readproperty | UA Service Read |
| writeproperty | UA Service Write |
| observeproperty | UA Service Monitor |
| invokeaction | UA Service Call |
If the default serialization of the OPC UA server is used, the contentType should be assigned with the value "application/octet-stream".
Optional, following term can be used within the WoT TD forms container:
| Vocabulary term | Description | Assignment | Type |
|---|---|---|---|
| uav:browsePath | Provides information about the path of a UA node as string, following the guideline of OPC UA Part 4 (v104) in Chapter A.2, starting from the root node of an OPC UA address space. E.g., "/Root/Object/1:Machine/1:Pressure" | optional | String |