I connected Arduino PLC Portenta Machine Control via Modbus to Ignition
Basic Steps
1 Setup the Static IP Address on Arduino PLC
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Check Modbus Unit Identifier
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Setup Some dummy Tags on Parameters to test
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Click Recalc, compile and Download
Note: I run into problems with COM port, just open Arduino IDE 2 and Serial if need it to recover access to the COM port
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Once downlaoded the free trial Server on your computer create a Device Connection on the OPC UA

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Add Tags on Ignition on Addresses Configuration
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Check quick Clilent

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Open desginer and create the Tags
a. Create the project
b. Create the OPC Tags, you can map them directly from the Device
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Test the Tags
a. Go online and set Live Debug

b. Set the Tags on the Watch Window
c. Test by changin the values on both ends















