NOMAD Camels driver for opc_ua_instrument

Driver for opc_ua_instrument written for the measurement software NOMAD Camels.

Allows you to add OPC UA variables that already exist.

Add the URL of the server hosting your variables. Similar to

opc.tcp://localhost:4840/freeopcua/server/

Add the namespace URL. For example

http://examples.freeopcua.github.io

You can now add any number of variables by clicking the green + symbol.

Select if you want to be able to change (set) them or if you only want to read (read-only) the variables with the drop-down menu.

The variable is accessed using its browse path and should look something like this:

0:Objects/2:MyObject/2:MyVariable

Changes

0.1.9

• Tried to fix issues where the synchronous client might not always return values directly but coroutines. Added checks to run these coroutines on the internal loop of the SyncClient.

0.1.8

• improved visual user-feedback while searching for variables

0.1.7

• fixed typo in config window

0.1.6

• Made setting and reading variables faster by saving variable instance to dict and reusing it.

0.1.5

• Fixed imports and class names: You can now combine multiple types of dynamically created instruments (like EPICS and OPC-UA instruments) in a single measurement.

0.1.4.

• Fixed data writing to the variables to always use the correct ua.DataType

0.1.3

• Fixed broken dependencies.

0.1.2

• When setting (writing) to variables the data-type of the variable is always checked and the value is cast to this data type before setting. Should make writing to variables much more stable.

0.1.1

• Added automatic variable adding. For this enter a RegEx pattern in the text field next to the Fetch and Add button. Then press the Fetch and Add button. This will go through the given server and try to match either the Node-ID or the Browse Path with the RegEx pattern given. Matches will be added with their Browse Path into the list below.

  [!WARNING] This can take quite some time if there are many nodes in the server!

Make sure to give them custom names under Name before clicking "OK".

Documentation

For more information and instruments visit the documentation.