read write mismatch

[aniluoh]

Expected Behavior

Writing a float value 286.075 when reading, it should return the same value.

Actual Behavior

When reading it, it shows the value 287.20

Steps to Reproduce the Problem

/*

• To change this license header, choose License Headers in Project Properties.
• To change this template file, choose Tools | Templates
• and open the template in the editor. */ package DashBoard;

import com.ghgande.j2mod.modbus.Modbus; import com.ghgande.j2mod.modbus.io.ModbusSerialTransaction; import com.ghgande.j2mod.modbus.msg.WriteMultipleRegistersRequest; import com.ghgande.j2mod.modbus.msg.WriteMultipleRegistersResponse; import com.ghgande.j2mod.modbus.msg.WriteSingleRegisterRequest; import com.ghgande.j2mod.modbus.msg.WriteSingleRegisterResponse; import com.ghgande.j2mod.modbus.net.SerialConnection; import com.ghgande.j2mod.modbus.procimg.Register; import com.ghgande.j2mod.modbus.procimg.SimpleRegister; import com.ghgande.j2mod.modbus.util.ModbusUtil; import com.ghgande.j2mod.modbus.util.SerialParameters; import java.util.logging.Level; import java.util.logging.Logger;

/*

• @author Matteo */ public class Register5253Test {

  public static void main(String[] args) { String comPort = "COM9"; int slave_Address = 5; //the unit identifier we will be talking to SerialParameters parameters; SerialConnection serialConnection = null; ModbusUtil modbusUtil = null; WriteMultipleRegistersRequest writeMultipleRegistersRequest; WriteMultipleRegistersResponse writeMultipleRegistersResponse; ModbusSerialTransaction trans; try { parameters = new SerialParameters(); parameters.setPortName(comPort); parameters.setBaudRate(9600); parameters.setDatabits(8); parameters.setStopbits(1); parameters.setParity("None"); parameters.setEncoding(Modbus.SERIAL_ENCODING_RTU); parameters.setEcho(false); serialConnection = new SerialConnection(parameters); serialConnection.open(); System.out.println("__Connection SuccessFul ____"); } catch (Exception ex) { Logger.getLogger(App.class .getName()).log(Level.SEVERE, null, ex); } float fl = (float) 286.075;

  byte[] byteArr = modbusUtil.floatToRegisters(fl);
  
  byte[] byteArr1 = {byteArr[0], byteArr[1]};
  byte[] byteArr2 = {byteArr[2], byteArr[3]};
  try {
      trans = new ModbusSerialTransaction(serialConnection);
      SimpleRegister myregister = new SimpleRegister(byteArr[0], byteArr[1]);
      SimpleRegister myregister2 = new SimpleRegister(byteArr[2], byteArr[3]);
      writeMultipleRegistersRequest = new WriteMultipleRegistersRequest();
      writeMultipleRegistersRequest.setUnitID(slave_Address);
      writeMultipleRegistersRequest.setHeadless();
      writeMultipleRegistersRequest.setReference(52); //register number 
      myregister.setValue(byteArr1);
      myregister2.setValue(byteArr2);
      Register[] register = {myregister, myregister2};
      writeMultipleRegistersRequest.setRegisters(register);
      trans.setRequest(writeMultipleRegistersRequest);
      trans.execute();
  } catch (com.ghgande.j2mod.modbus.ModbusException exception) {
      System.out.println("Exception Occured ----" + exception);
  }
  serialConnection.close();

  } }

Specifications

• Version:
• Platform:
• Subsystem:

[aniluoh]

Sorry! for inconvenience, my device was faulty.