> For the complete documentation index, see [llms.txt](https://docs.tricloudnexus.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tricloudnexus.io/edge/nexus-modules/data-connector-modules/opcuamodule/direct-commands.md).

# Direct Commands

The OpcUAModule supports a number of direct commands that are used for controlling the data collection on the edge device.

* **Browse**: Allows browsing of the OPC UA namespace. The opc namespace is saved to a file and upload to a cloud storage account.
* **ValidateTags**: Direct command to support validating OPC UA item references. This command is usefull when configuring new OPC UA tags, where this method can ensure that the tag references are valid.
* **GetSnapshot**: Direct command support to get latest OPC UA value from a list of item references. This command is usefull when configuring new tags, to ensure that values and value scaling is correct.
* **Write**: Direct command to support writing measurements to an OPC UA server, using already configured tags. This can be used to test that writing is possible.

Additionally, the current configuration can be retrieved with the following direct methods:

* **GetConfig**: Triggers that a copy of the current configuration is returned in the payload. If the content is larger than the allowed payload size of a direct command, it is truncated.


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