opcua_client_python

A simple python OPC UA client. The client can be used to get data from an OPC UA server and as well set values for different on the server.

OPC UA Server

You can use the endpoint of your OPC UA server if you have one running already. A PROSYS Simulation server has been used in this implementation. If you don't have a server running already, you can use a Server Simulation to test your client. You can find the tutorial on how to install, configure and use a PROSYS simulation server here

Install Dependencies

pip3 install -r requirements.txt

How to get Nodes and Node values

1. replace the url value with your server endpoint

url = "opc.tcp://DESKTOP-FL73J86.mshome.net:53530/OPCUA/SimulationServer"

2. add the nodes you want to monitor. Specify the namespace (ns) and id (i) for each node

tempNode = client.get_node("ns=3;i=1001")
temperature = tempNode.get_value()

How to set Node Values

1. create a node variable for a node on the server specifying the namespace (ns) and id (i) for the node

numNode = client.get_node("ns=3;i=1008")

2. set the value of the created node

client.set_values([numNode], [num+1])