Ejemplo n.º 1
0
  /**
   * Send a request to JAMod library. Opens and closes the connection each time. Otherwise the TCP
   * Stack of the slaves seams to have problems creating a response.
   *
   * @param request
   * @return the response
   */
  private ModbusResponse sendRequest(ModbusRequest request) {
    if (request == null) return null;
    prepareConnection();

    ModbusResponse response = null;
    transaction.setRequest(request);

    try {
      transaction.execute();
      response = transaction.getResponse();
    } catch (Exception e) {
      log.warning("Sending request not successful: " + e.getMessage());
    }
    this.connection.close();

    return response;
  }
Ejemplo n.º 2
0
  public static void main(String[] args) {

    TCPMasterConnection con = null;
    ModbusTCPTransaction trans = null;
    ReadInputDiscretesRequest req = null;
    ReadInputDiscretesResponse res = null;

    InetAddress addr = null;
    int ref = 0;
    int count = 0;
    int repeat = 1;
    int port = Modbus.DEFAULT_PORT;

    try {

      // 1. Setup the parameters
      if (args.length < 3) {
        printUsage();
        System.exit(1);
      } else {
        try {
          String astr = args[0];
          int idx = astr.indexOf(':');
          if (idx > 0) {
            port = Integer.parseInt(astr.substring(idx + 1));
            astr = astr.substring(0, idx);
          }
          addr = InetAddress.getByName(astr);
          ref = Integer.parseInt(args[1]);
          count = Integer.parseInt(args[2]);
          if (args.length == 4) {
            repeat = Integer.parseInt(args[3]);
          }
        } catch (Exception ex) {
          ex.printStackTrace();
          printUsage();
          System.exit(1);
        }
      }

      // 2. Open the connection
      con = new TCPMasterConnection(addr);
      con.setPort(port);
      con.connect();

      if (Modbus.debug) System.out.println("Connected to " + addr.toString() + ":" + con.getPort());

      // 3. Prepare the request
      req = new ReadInputDiscretesRequest(ref, count);
      // ReadCoilsRequest req = new ReadCoilsRequest(ref, count);
      req.setUnitID(0);
      if (Modbus.debug) System.out.println("Request: " + req.getHexMessage());

      // 4. Prepare the transaction
      trans = new ModbusTCPTransaction(con);
      trans.setRequest(req);
      trans.setReconnecting(false);

      // 5. Execute the transaction repeat times
      int k = 0;
      do {
        trans.execute();

        res = (ReadInputDiscretesResponse) trans.getResponse();
        // ReadCoilsResponse res = (ReadCoilsResponse)
        // trans.getResponse();

        if (Modbus.debug) System.out.println("Response: " + res.getHexMessage());
        System.out.println("Digital Inputs Status=" + res.getDiscretes().toString());

        // System.out.println("Coils Status=" +
        // res.getCoils().toString());
        k++;
      } while (k < repeat);

      // 6. Close the connection
      con.close();

    } catch (Exception ex) {
      ex.printStackTrace();
    }
  } // main