Easy OPC
A free OPC client to connect to any OPC UA/DA server and log data to CSV files. EasyOPC is currently in use at multiple solar and wind farms across 42 countries, collecting billions of tag data points every day.
Disclaimer
This software is provided as is and comes with no warranties. It has not been thoroughly tested for security issues. No support is provided.
Note: Some AV programs might throw up a false positive warning.
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