Hi,

I just want understand what's the difference of the field encapsulated of IpParameters

Here the source code

  // Wrap the modbus request in a ip request.
        OutgoingRequestMessage ipRequest;
        if (ipParameters.isEncapsulated())
            ipRequest = new EncapMessageRequest(request);
        else
            ipRequest = new XaMessageRequest(request, getNextTransactionId());

I work with a plc wago with the UdpMaster.

Thanks

Hi,

I just want understand what's the difference of the field encapsulated of IpParameters

Here the source code

  // Wrap the modbus request in a ip request.
        OutgoingRequestMessage ipRequest;
        if (ipParameters.isEncapsulated())
            ipRequest = new EncapMessageRequest(request);
        else
            ipRequest = new XaMessageRequest(request, getNextTransactionId());

I work with a plc wago with the UdpMaster.

Thanks

Thanks!

Ok its works..
my code :

public static void main(String[] args) {
       
            ModbusFactory m = new ModbusFactory();
            IpParameters ip = new IpParameters();
            ip.setHost("192.168.10.2");
            ip.setPort(502);
            ModbusMaster mp = m.createUdpMaster(ip);
        try {
            mp.init();
            ModbusRequest req = new WriteRegisterRequest(1,0,1800);
            mp.send(req);
            ModbusRequest req2 = new ReadHoldingRegistersRequest(1,0,1);
            ReadResponse rep = (ReadResponse) mp.send(req2);
            System.out.println(rep.getShortData()[0]);
            
        } catch (Exception ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
      
    }

in my classpath:
axis.jar
bacnet.jar
modbus4j.jar
RTXXcomm.jar
serioUtil.jar

All this library are necessary?

It's not possible to get direct the value short double string? In the good typage?

Thanks four your help and for your job, it's great and its works under windows and linux, before I've tried UDP under linux with jamod and there is serious problems..

It's should be very interessant if the necessary library are of sourceforge.net..

For the novice, a little tutorial should be nice..

Here my code:

   public static void main(String[] args) {
       
            ModbusFactory m = new ModbusFactory();
            IpParameters ip = new IpParameters();
            ip.setHost("127.0.0.1");
            ip.setPort(502);
            ModbusMaster mp = m.createTcpMaster(ip, false);
        try {
            mp.init();
            ModbusRequest req = new ReadInputRegistersRequest(1, 0, 1);
            ReadInputRegistersResponse rep = (ReadInputRegistersResponse) mp.send(req);
            System.out.println(rep.getData());

        } catch (Exception ex) {
            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
        }
      
    }

I've this exception:

Exception in thread "main" java.lang.NoSuchMethodError: com.serotonin.io.messaging.StreamTransport.<init>(Ljava/io/InputStream;Ljava/io/OutputStream;)V
        at com.serotonin.modbus4j.ip.tcp.TcpMaster.openConnection(TcpMaster.java:113)
        at com.serotonin.modbus4j.ip.tcp.TcpMaster.send(TcpMaster.java:62)
        at javaapplication6.Main.main(Main.java:45)

Thanks for your furture help

Hi,
thanks for your library.. Have you an sample to read a marker (word) in a plc?
Thanks

Hi,
thanks for your library.. Have you an sample to read a marker (word) in a plc?
Thanks