Algorithm 1: System Connection

1. Given: OPC UA server, Modbus TCP server, error text field 2. Initialize: opcClient= new OpcClient(“opc.tcp://192.168.1.5:4840”)         modbusClient=new ModbusClient(“192.168.1.42”, 502)         error = false 3. function Start 4.    try 5.      opcClient.Connect() 6.      modbusClient.Connect() 7.         Log(“Industrial devices connected”) 8.           error.text ← “Industrial devices connected” 9.      catch Exception e 10.          error ← true 11.          Log(“Failed to connect: “ + e.Message) 12.          error.text ← “Failed to connect: “ + e.Message 13.      end try 14.      return error 15. end function