RTServer

class RTServer(opts)

Bases: object

Real Time Server. The RTServer class extends do-mpc with an easy to setup opcua server.

Configuration and setup:

Configuring and setting up the RTServer client involves the following steps:

1. Use do_mpc.opcua.ServerOpts dataclass to specify server name as well as IP adress and port for the server.

2. Initiate the RTServer class with the ServerOpts dataclass.

3. Use the namespace_from_client() to automatically generate a namespace from a do_mpc.opcua.RTBase instance (optional).

4. Start the OPC UA server by calling start()

Note

Remember to properly stop the server afterwards using the stop() method.

Parameters

opts (ServerOpts) – Server options.

Methods

add_variable_to_node

add_variable_to_node(self, namespace_entry, namespace_url)

Adds a variable to a registered node on the OPC UA server.

Parameters

• namespace_entry (NamespaceEntry) – A OPCUA node ID. Contains the variable as well as the target node name.

• namespace_url (int) – The namespace index identifying the namespace on the OPC UA server

Return type

None

namespace_from_client

namespace_from_client(self, client)

Takes an instance of do_mpc.opcua.RTBase as input and registers an OPC UA namespace for the namespace stored in the RTBase class.

Parameters

client (RTClient) – A client with a stored namespace.

Return type

None

start

start(self)

Starts the OPC UA server.

Return type

None

stop

stop(self)

Stops the OPC UA server

Return type

None