com.serotonin.modbus4j

类 ModbusMaster

java.lang.Object

com.serotonin.modbus4j.Modbus

com.serotonin.modbus4j.ModbusMaster

直接已知子类:

SerialMaster, TcpListener, TcpMaster, UdpMaster

public abstract class ModbusMaster
extends Modbus

字段概要

字段

限定符和类型	字段和说明
protected boolean	connected If connection is established with slave/slaves
protected boolean	initialized

从类继承的字段 com.serotonin.modbus4j.Modbus

DEFAULT_MAX_READ_BIT_COUNT, DEFAULT_MAX_READ_REGISTER_COUNT, DEFAULT_MAX_WRITE_REGISTER_COUNT

构造器概要

构造器

构造器和说明
ModbusMaster()

方法概要

限定符和类型	方法和说明
protected void	closeMessageControl(MessageControl conn)
abstract void	destroy()
int	getDiscardDataDelay()
InputStreamEPollWrapper	getePoll()
BaseIOLog	getIoLog()
protected MessageControl	getMessageControl()
int	getRetries()
int	getTimeout()
<T> T	getValue(BaseLocator<T> locator) Returns a value from the modbus network according to the given locator information.
abstract void	init()
boolean	isConnected()
boolean	isInitialized()
boolean	isMultipleWritesOnly()
List<Integer>	scanForSlaveNodes() Node scanning.
ProgressiveTask	scanForSlaveNodes(NodeScanListener l)
<K> BatchResults<K>	send(BatchRead<K> batch) Useful for sending a number of polling commands at once, or at least in as optimal a batch as possible.
ModbusResponse	send(ModbusRequest request)
abstract ModbusResponse	sendImpl(ModbusRequest request)
void	setConnected(boolean connected)
void	setDiscardDataDelay(int discardDataDelay)
void	setePoll(InputStreamEPollWrapper ePoll)
void	setIoLog(BaseIOLog ioLog)
void	setMultipleWritesOnly(boolean multipleWritesOnly)
void	setRetries(int retries)
void	setTimeout(int timeout)
<T> void	setValue(BaseLocator<T> locator, Object value)
boolean	testSlaveNode(int node)

从类继承的方法 com.serotonin.modbus4j.Modbus

getExceptionHandler, getMaxReadBitCount, getMaxReadCount, getMaxReadRegisterCount, getMaxWriteRegisterCount, setExceptionHandler, setMaxReadBitCount, setMaxReadRegisterCount, setMaxWriteRegisterCount, validateNumberOfBits, validateNumberOfRegisters

从类继承的方法 java.lang.Object

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

字段详细资料

connected

protected boolean connected

If connection is established with slave/slaves

initialized

protected boolean initialized

构造器详细资料

ModbusMaster

public ModbusMaster()

方法详细资料

isConnected

public boolean isConnected()

setConnected

public void setConnected(boolean connected)

init

public abstract void init()
                   throws ModbusInitException

抛出:

ModbusInitException

isInitialized

public boolean isInitialized()

destroy

public abstract void destroy()

send

public final ModbusResponse send(ModbusRequest request)
                          throws ModbusTransportException

抛出:

ModbusTransportException

sendImpl

public abstract ModbusResponse sendImpl(ModbusRequest request)
                                 throws ModbusTransportException

抛出:

ModbusTransportException

getValue

public <T> T getValue(BaseLocator<T> locator)
               throws ModbusTransportException,
                      ErrorResponseException

Returns a value from the modbus network according to the given locator information. Various data types are allowed to be requested including multi-word types. The determination of the correct request message to send is handled automatically.

参数:

locator - the information required to locate the value in the modbus network.

返回:

an object representing the value found. This will be one of Boolean, Short, Integer, Long, BigInteger, Float, or Double. See the DataType enumeration for details on which type to expect.

抛出:

ModbusTransportException - if there was an IO error or other technical failure while sending the message

ErrorResponseException - if the response returned from the slave was an exception.

setValue

public <T> void setValue(BaseLocator<T> locator,
                         Object value)
                  throws ModbusTransportException,
                         ErrorResponseException

抛出:

ModbusTransportException

ErrorResponseException

scanForSlaveNodes

public List<Integer> scanForSlaveNodes()

Node scanning. Returns a list of slave nodes that respond to a read exception status request (perhaps with an error, but respond nonetheless). Note: a similar scan could be done for registers in nodes, but, for one thing, it would take some time to run, and in any case the results would not be meaningful since there would be no semantic information accompanying the results.

scanForSlaveNodes

public ProgressiveTask scanForSlaveNodes(NodeScanListener l)

testSlaveNode

public boolean testSlaveNode(int node)

getRetries

public int getRetries()

setRetries

public void setRetries(int retries)

getTimeout

public int getTimeout()

setTimeout

public void setTimeout(int timeout)

isMultipleWritesOnly

public boolean isMultipleWritesOnly()

setMultipleWritesOnly

public void setMultipleWritesOnly(boolean multipleWritesOnly)

getDiscardDataDelay

public int getDiscardDataDelay()

setDiscardDataDelay

public void setDiscardDataDelay(int discardDataDelay)

getIoLog

public BaseIOLog getIoLog()

setIoLog

public void setIoLog(BaseIOLog ioLog)

getePoll

public InputStreamEPollWrapper getePoll()

setePoll

public void setePoll(InputStreamEPollWrapper ePoll)

send

public <K> BatchResults<K> send(BatchRead<K> batch)
                         throws ModbusTransportException,
                                ErrorResponseException

Useful for sending a number of polling commands at once, or at least in as optimal a batch as possible.

抛出:

ModbusTransportException

ErrorResponseException

getMessageControl

protected MessageControl getMessageControl()

closeMessageControl

protected void closeMessageControl(MessageControl conn)