net.sourceforge.jmodbus
Class ModbusMessage

java.lang.Object
  |
  +--net.sourceforge.jmodbus.ModbusMessage

public class ModbusMessage

extends java.lang.Object

Class to represent a Modbus message. This will encapsulate all the elements of a message that should be considered common to all implementations of Modbus, even if some elements are not used.

WARNING: This class is currently very weak and does not offer protection that incorrect message lengths etc... will not be set. It shoudl also use get/set methods eventually but we first need to examine how much overhead that will create for the system.

Field Summary

byte[]	buff The byte array containing the message.
int	length Length field to indicate how much of the byte buffer contains valid data.
int	transID The transaction ID of this message, this is only really used by the TCP implementations.

Constructor Summary

ModbusMessage()
Class constructor that will allocate memory for the byte buffer and initilize the message object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

buff

public byte[] buff

The byte array containing the message. This is fixed in length to the maximum length, use the length field to check it's length.

length

public int length

Length field to indicate how much of the byte buffer contains valid data.

transID

public int transID

The transaction ID of this message, this is only really used by the TCP implementations.

Constructor Detail

ModbusMessage

public ModbusMessage()

Class constructor that will allocate memory for the byte buffer and initilize the message object.