Lesen von Daten aus DB in Siemens S71500 mit libnodave und Java nicht möglich

Question

Ich kann Daten von Siemens S7300 mit libnodave lesen, konnte aber die Daten von Siemens S71500 nicht lesen. Im Code sehen Sie, dass ich versuche, die ersten 4 Byte Daten von DB2 zu lesen. Der Code läuft erfolgreich mit S7300, wenn ich die IP-Adresse und die Slot-Nummer

import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.net.Socket; 
import java.net.UnknownHostException; 

import org.libnodave.Nodave; 
import org.libnodave.PLCinterface; 
import org.libnodave.S7Connection; 
import org.libnodave.TCPConnection; 

public class ConnectPLC { 

    public static void main(String[] args) { 
     S7Connection dc; 
     String ip = "192.168.0.61"; 
     Socket sock; 
     OutputStream oStream = null; 
     InputStream iStream = null; 
     PLCinterface di; 
     int slot = 1; 

     try { 
      System.out.println("Inside the try block"); 
      sock = new Socket(ip, 102); 

      if(sock != null) { 
       oStream = sock.getOutputStream(); 
       iStream = sock.getInputStream(); 
       di = new PLCinterface(
         oStream, 
         iStream, 
         "PLCInterface1", 
         0, 
         Nodave.PROTOCOL_ISOTCP); 
       di.initAdapter(); 
       dc = new TCPConnection(di, 0, slot);    
       int res = dc.connectPLC(); 
       int x = 0; 

       if (0 == res) { 
        System.out.println("++++++++++++++++++++++++++++++++++++"); 
        System.out.println("PLC is connected"); 
        System.out.println("++++++++++++++++++++++++++++++++++++"); 
        byte[] byteArray = new byte[4]; 

        x = dc.readBytes(Nodave.DB, 2, 0, 4, byteArray); 
        System.out.println("The value of x is "+x); 

        for (int i = 0; i < byteArray.length ; i++) { 
         System.out.println("The value at index "+i+" is "+byteArray[i]); 
        } 
        System.out.println(dc.getINT(0)); 
        System.out.println(dc.getINT(2)); 
        if (x == 0) { 
         //byte[] byteArray = dc.msgIn; 
         for (int i = 0; i < byteArray.length ; i++) { 
          System.out.println("The value at index "+i+" is "+byteArray[i]); 
         } 
         System.out.println(dc.getINT(0)); 
         System.out.println(dc.getINT(2)); 
        } 



       } else { 
        System.out.println("PLC is not connected"); 
       } 

       System.out.println("Now disconnecting\n"); 
       dc.disconnectPLC(); 
       di.disconnectAdapter(); 

       System.out.println(); 

      } 
     } catch (UnknownHostException e) { 
      System.out.println("Unknown Host Exception is Caught during the declaration of the socket"); 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      System.out.println("IO Exception is Caught during the declaration of the socket"); 
      e.printStackTrace(); 
     } 
    } 

} 

Answer 1

Das gleiche Problem ändern

in diesem Beitrag erwähnt

libnodave error while reading from Siemens s7-1200 (0x8104)

Nachdem die Zugriffsprüfung/GET PUT I Ich kann die Daten von der SPS lesen