程序包 com.huangjian.modbus4j.serial.rtu

类 RtuMaster

java.lang.Object

com.huangjian.modbus4j.Modbus

com.huangjian.modbus4j.ModbusMaster

com.huangjian.modbus4j.serial.SerialMaster

com.huangjian.modbus4j.serial.rtu.RtuMaster

public class RtuMaster
extends SerialMaster

RtuMaster class.

字段概要

从类继承的字段 com.huangjian.modbus4j.serial.SerialMaster

serialPortOpen, transport, wrapper

从类继承的字段 com.huangjian.modbus4j.ModbusMaster

connected, initialized, validateResponse

从类继承的字段 com.huangjian.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	说明
RtuMaster(SerialPortWrapper wrapper)	Constructor for RtuMaster.
RtuMaster(SerialPortWrapper wrapper, boolean validateResponse)	Constructor for RtuMaster.

方法概要

修饰符和类型	方法	说明
static long	computeCharacterSpacing(SerialPortWrapper wrapper)	RTU Spec: For baud greater than 19200 Char Spacing: 750uS For baud less than 19200 Char Spacing: 1.5 * char time
static float	computeCharacterTime(SerialPortWrapper wrapper)	Compute the time it takes to transmit 1 character with the provided Serial Parameters.
static long	computeMessageFrameSpacing(SerialPortWrapper wrapper)	RTU Spec: For baud greater than 19200 Message Spacing: 1.750uS For baud less than 19200 Message Spacing: 3.5 * char time
void	destroy()	destroy.
void	init()	init.
protected void	openConnection(MessageControl toClose)	Open the serial port and initialize the transport, ensure connection is closed first
ModbusResponse	sendImpl(ModbusRequest request)	sendImpl.

从类继承的方法 com.huangjian.modbus4j.serial.SerialMaster

close, closeConnection

从类继承的方法 com.huangjian.modbus4j.ModbusMaster

closeMessageControl, getDiscardDataDelay, getePoll, getIoLog, getMessageControl, getRetries, getTimeout, getValue, isConnected, isInitialized, isMultipleWritesOnly, scanForSlaveNodes, scanForSlaveNodes, send, send, setConnected, setDiscardDataDelay, setePoll, setIoLog, setMultipleWritesOnly, setRetries, setTimeout, setValue, testSlaveNode

从类继承的方法 com.huangjian.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

构造器详细资料

RtuMaster

public RtuMaster(SerialPortWrapper wrapper)

Constructor for RtuMaster.

Default to validating the slave id in responses

参数:

wrapper - a SerialPortWrapper object.

RtuMaster

public RtuMaster(SerialPortWrapper wrapper,
 boolean validateResponse)

Constructor for RtuMaster.

参数:

wrapper - a SerialPortWrapper object.

validateResponse - - confirm that requested slave id is the same in the response

方法详细资料

init

public void init()
          throws ModbusInitException

init.

覆盖:

init 在类中 SerialMaster

抛出:

ModbusInitException - if any.

openConnection

protected void openConnection(MessageControl toClose)
                       throws Exception

Open the serial port and initialize the transport, ensure connection is closed first

覆盖:

openConnection 在类中 SerialMaster

参数:

toClose -

抛出:

Exception

destroy

public void destroy()

destroy.

指定者:

destroy 在类中 ModbusMaster

sendImpl

public ModbusResponse sendImpl(ModbusRequest request)
                        throws ModbusTransportException

sendImpl.

指定者:

sendImpl 在类中 ModbusMaster

参数:

request - a ModbusRequest object.

返回:

a ModbusResponse object.

抛出:

ModbusTransportException - if any.

computeMessageFrameSpacing

public static long computeMessageFrameSpacing(SerialPortWrapper wrapper)

RTU Spec: For baud greater than 19200 Message Spacing: 1.750uS For baud less than 19200 Message Spacing: 3.5 * char time

参数:

wrapper - a SerialPortWrapper object.

返回:

a long.

computeCharacterSpacing

public static long computeCharacterSpacing(SerialPortWrapper wrapper)

RTU Spec: For baud greater than 19200 Char Spacing: 750uS For baud less than 19200 Char Spacing: 1.5 * char time

参数:

wrapper - a SerialPortWrapper object.

返回:

a long.

computeCharacterTime

public static float computeCharacterTime(SerialPortWrapper wrapper)

Compute the time it takes to transmit 1 character with the provided Serial Parameters. RTU Spec: For baud greater than 19200 Char Spacing: 750uS Message Spacing: 1.750uS For baud less than 19200 Char Spacing: 1.5 * char time Message Spacing: 3.5 * char time

参数:

wrapper - a SerialPortWrapper object.

返回:

time in nanoseconds