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OpENer
OpENer is an EtherNet/IP stack for I/O adapter devices. It supports multiple I/O and explicit connections and includes objects and services for making EtherNet/IP-compliant products as defined in the ODVA specification.
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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.
PyLogix is a comm driver that lets you communicate over ethernet to allen bradley devices. https://github.com/dmroeder/pylogix
I'm sure /u/dmroeder can chime in here, but as far as I'm aware pylogix, libplctag, and a few other libraries, use Level 2 (I think that's the term used by CIP) CIP comms to talk to the PLCs. It's the same comms used by HMI etc. The IO though would probably only talk Level 1 comms which has more guarantees on reliability and RPI etc. You could possibly use something like OpENer for this.
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