I am new to PLC Programming. I am looking to connect AB Micrologix 1200 on Ethernet Network for Point Discovery through Software. Port 0 is connected to Preprogrammed HMI and operating on Modbus RTU. I want to use 1761-NET-AIC Card for this purpose, But I am confused how I should connect PLC with this card when already HMI is connected to PLC on Port 0. The ultimate goal is to acquire real time data and store in DB. I plan to use Python/C# to acquire the data once I am clear on hardware connecting. Please Guide.
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