EtherNet/IP Read

Available on: Flexs Q5 Pro Flexs Q5M Flexs Q5C

Connects to an Allen-Bradley style PLC over EtherNet/IP, reads four floats from file F103, parses them with the binary reader (with unit conversion), and tracks data freshness.

let plc = {lastUpdated:0};

while(run()){


   //  eip.disconnect();
  if(eip.connect("192.168.168.1") === 0){ // 0 = no error

  let res = eip.read("F103",1,4*4); // File: F103,  Offset: 1, Bytes: 4*8 (4x 4 byte floats)
    // Files can be prefixed with F,O,I,S,B,T,R,N depending on type


  if(res.status === 0){ // 0 = no error

    res.data.seek(0); // establish our binary reader cursor to parse the input data

    plc = {
      flow: res.data.read("F32ABCD"), // Parse the bytes into our object
      pressure: res.data.read() * 0.145038,// kPA to PSI,  
      pumpSpeed: res.data.read(),no read format specified. Use the last defined read format
      temp: res.data.read(),
      lastUpdated:now()
    };

    print( string (plc) ); // Print our result data

  } else {
    print("PLC Read Failed");
  }


  } else {
    print("PLC Connection Failed");

    let updatedAgo = now() - plc.lastUpdated;
    print("Last Updated ",updatedAgo, " S Ago");

  }

  eip.disconnect(); // End the connection


  waitMS(1000);

}