com.ghgande.j2mod.modbus.io

Class ModbusUDPTransaction

java.lang.Object

com.ghgande.j2mod.modbus.io.ModbusTransaction

com.ghgande.j2mod.modbus.io.ModbusUDPTransaction

public class ModbusUDPTransaction
extends ModbusTransaction

Class implementing the ModbusTransaction interface for the UDP transport mechanism.

Version:

2.0 (March 2016)

Author:

Dieter Wimberger, Steve O'Hara (4NG)

Constructor Summary

Constructors

Constructor and Description
ModbusUDPTransaction() Constructs a new ModbusUDPTransaction instance.
ModbusUDPTransaction(AbstractUDPTerminal terminal) Constructs a new ModbusUDPTransaction instance with a given UDPTerminal to be used for transactions.
ModbusUDPTransaction(ModbusRequest request) Constructs a new ModbusUDPTransaction instance with a given ModbusRequest to be send when the transaction is executed.
ModbusUDPTransaction(UDPMasterConnection con) Constructs a new ModbusUDPTransaction instance with a given ModbusUDPConnection to be used for transactions.

Method Summary

Modifier and Type	Method and Description
void	execute() Executes this ModbusTransaction.
void	setTerminal(AbstractUDPTerminal terminal) Sets the terminal on which this ModbusTransaction should be executed.

Methods inherited from class com.ghgande.j2mod.modbus.io.ModbusTransaction

getRequest, getResponse, getTransactionID, isCheckingValidity, setCheckingValidity, setRequest, setRetries

Methods inherited from class java.lang.Object

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

Constructor Detail

ModbusUDPTransaction

public ModbusUDPTransaction()

Constructs a new ModbusUDPTransaction instance.

ModbusUDPTransaction

public ModbusUDPTransaction(ModbusRequest request)

Constructs a new ModbusUDPTransaction instance with a given ModbusRequest to be send when the transaction is executed.

Parameters:

request - a ModbusRequest instance.

ModbusUDPTransaction

public ModbusUDPTransaction(AbstractUDPTerminal terminal)

Constructs a new ModbusUDPTransaction instance with a given UDPTerminal to be used for transactions.

Parameters:

terminal - a UDPTerminal instance.

ModbusUDPTransaction

public ModbusUDPTransaction(UDPMasterConnection con)

Constructs a new ModbusUDPTransaction instance with a given ModbusUDPConnection to be used for transactions.

Parameters:

con - a ModbusUDPConnection instance.

Method Detail

setTerminal

public void setTerminal(AbstractUDPTerminal terminal)

Sets the terminal on which this ModbusTransaction should be executed.

Parameters:

terminal - a UDPSlaveTerminal.

execute

public void execute()
             throws ModbusIOException,
                    ModbusSlaveException,
                    ModbusException

Description copied from class: ModbusTransaction

Executes this ModbusTransaction. Locks the ModbusTransport for sending the ModbusRequest and reading the related ModbusResponse. If reconnecting is activated the connection will be opened for the transaction and closed afterwards.

Specified by:

execute in class ModbusTransaction

Throws:

ModbusException - if an I/O error occurs, or the response is a modbus protocol exception.

ModbusIOException

ModbusSlaveException