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• Once connected navigate back to Config again, and down to OPC Quick Client. 

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• Since you are now connected to the PLC, you should be able to bring up this option, where you can see what is running on the PLC. Here you can navigate yourself through the folders and find the variables you want to subscribe to and later retrieve in Ignition Designer. 

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• To subscribe, press the s as shown in the picture, then you will get the values of this variable at the bottom of the same page. This variable that is selected shows changes directly if there are any changes that occur, if you then choose to press a button, it will go from "false" to "true"

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