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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Python Library for Writing to PLC
If you're using a MicroLogix with ethernet you can try pycomm3. It's a pure Python Ethernet/IP library I maintain. It started as a port of pycomm to Python 3, but since has changed significantly. It has "support" for MicroLogix thru the SLCDriver. You may need to refer to the pycomm documentation for addressing examples, though. When I was at an integrator we never used MicroLogix PLCs, so any testing was done against a SLC. If you try it out and run into any issues, feel free to open up a issue on GitHub.