com.ghgande.j2mod.modbus.io

Class ModbusTCPTransaction

java.lang.Object

com.ghgande.j2mod.modbus.io.ModbusTransaction

com.ghgande.j2mod.modbus.io.ModbusTCPTransaction

public class ModbusTCPTransaction
extends ModbusTransaction

Class implementing the ModbusTransaction interface.

Version:

2.0 (March 2016)

Author:

Dieter Wimberger, Steve O'Hara (4NG)

Constructor Summary

Constructors

Constructor and Description
ModbusTCPTransaction() Constructs a new ModbusTCPTransaction instance.
ModbusTCPTransaction(ModbusRequest request) Constructs a new ModbusTCPTransaction instance with a given ModbusRequest to be send when the transaction is executed.
ModbusTCPTransaction(TCPMasterConnection con) Constructs a new ModbusTCPTransaction instance with a given TCPMasterConnection to be used for transactions.

Method Summary

Modifier and Type	Method and Description
void	execute() Executes this ModbusTransaction.
boolean	isReconnecting() Tests if the connection will be opened and closed for each execution.
void	setConnection(TCPMasterConnection con) Sets the connection on which this ModbusTransaction should be executed.
void	setReconnecting(boolean b) Sets the flag that controls whether a connection is opened and closed for each execution or not.

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

ModbusTCPTransaction

public ModbusTCPTransaction()

Constructs a new ModbusTCPTransaction instance.

ModbusTCPTransaction

public ModbusTCPTransaction(ModbusRequest request)

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

Parameters:

request - a ModbusRequest instance.

ModbusTCPTransaction

public ModbusTCPTransaction(TCPMasterConnection con)

Constructs a new ModbusTCPTransaction instance with a given TCPMasterConnection to be used for transactions.

Parameters:

con - a TCPMasterConnection instance.

Method Detail

setConnection

public void setConnection(TCPMasterConnection con)

Sets the connection on which this ModbusTransaction should be executed.

An implementation should be able to handle open and closed connections.

Parameters:

con - a TCPMasterConnection.

isReconnecting

public boolean isReconnecting()

Tests if the connection will be opened and closed for each execution.

Returns:

true if reconnecting, false otherwise.

setReconnecting

public void setReconnecting(boolean b)

Sets the flag that controls whether a connection is opened and closed for each execution or not.

Parameters:

b - true if reconnecting, false otherwise.

execute

public void execute()
             throws 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.