![]() If we delete “/n” of our java code, the node-red doesn’t work. We tried some modifications, for example, we put “COM7”, and Figure 4 shows the answer we get when we run it:įigure 5 shows the message of each button of our GUI. ![]() However, the answer we get is shown in Figure 3 on the debug. ![]() To test our progress, we have created this function on our Flow Figure 2: Our challenge is to send data with some conditionals. We have already connected Node-Red with our GUI to generate a graph with random numbers Figure 1 shows it. We are also using virtual serial port because we have been working with the OPC UA Protocol. We have created a GUI using Netbeans (Java) and we used node-red to communicate with a PLC. Implementing virtual Serial port communication: java with node-red
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