net.wimpi.modbus.msg
Class WriteMultipleCoilsRequest

java.lang.Object
  net.wimpi.modbus.msg.ModbusMessageImpl
      net.wimpi.modbus.msg.ModbusRequest
          net.wimpi.modbus.msg.WriteMultipleCoilsRequest

All Implemented Interfaces:

ModbusMessage, Transportable

public final class WriteMultipleCoilsRequest

extends ModbusRequest

Class implementing a WriteMultipleCoilsRequest. The implementation directly correlates with the class 1 function write multiple coils (FC 15). It encapsulates the corresponding request message.

Coils are understood as bits that can be manipulated (i.e. set or unset).

Version:

1.2rc1 (09/11/2004)

Author:

Dieter Wimberger

Constructor Summary

WriteMultipleCoilsRequest()
Constructs a new ReadCoilsRequest instance.

WriteMultipleCoilsRequest(int ref, BitVector bv)
Constructs a new WriteMultipleCoilsRequest instance with given reference and coil status.

WriteMultipleCoilsRequest(int ref, int count)
Constructs a new WriteMultipleCoilsRequest instance with a given reference and count of coils (i.e. bits) to be written.

Method Summary

ModbusResponse	createResponse() Returns the ModbusResponse that represents the answer to this ModbusRequest.
int	getBitCount() Returns the number of bits (i.e. input discretes) read with the request.
int	getByteCount() Returns the number of bytes required for packing the coil bits.
BitVector	getCoils() Returns the BitVector instance holding coil status information.
boolean	getCoilStatus(int index) Returns the status of the given coil.
int	getReference() Returns the reference of the register to to start reading from with this ReadCoilsRequest.
void	readData(java.io.DataInput din) Reads the subclass specific data from the given DataInput instance.
void	setCoils(BitVector bv) Sets the BitVector instance holding coil status information.
void	setCoilStatus(int index, boolean b) Sets the coil status of the given coil.
void	setReference(int ref) Sets the reference of the register to start reading from with this ReadCoilsRequest.
void	writeData(java.io.DataOutput dout) Writes the subclass specific data to the given DataOutput.

Methods inherited from class net.wimpi.modbus.msg.ModbusRequest

createExceptionResponse, createModbusRequest

Methods inherited from class net.wimpi.modbus.msg.ModbusMessageImpl

getDataLength, getFunctionCode, getHexMessage, getOutputLength, getProtocolID, getTransactionID, getUnitID, isHeadless, readFrom, setDataLength, setFunctionCode, setHeadless, setHeadless, setProtocolID, setTransactionID, setUnitID, writeTo

Methods inherited from class java.lang.Object

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

Constructor Detail

WriteMultipleCoilsRequest

public WriteMultipleCoilsRequest()

Constructs a new ReadCoilsRequest instance.

WriteMultipleCoilsRequest

public WriteMultipleCoilsRequest(int ref,
                                 int count)

Constructs a new WriteMultipleCoilsRequest instance with a given reference and count of coils (i.e. bits) to be written.

Parameters:

ref - the index of the first coil to be written.

count - the number of coils to be written.

WriteMultipleCoilsRequest

public WriteMultipleCoilsRequest(int ref,
                                 BitVector bv)

Constructs a new WriteMultipleCoilsRequest instance with given reference and coil status.

Parameters:

ref - the index of the first coil to be written.

bv - the coils to be written.

Method Detail

createResponse

public ModbusResponse createResponse()

Description copied from class: ModbusRequest

Returns the ModbusResponse that represents the answer to this ModbusRequest.

The implementation should take care about assembling the reply to this ModbusRequest.

Specified by:

createResponse in class ModbusRequest

Returns:

the corresponding ModbusResponse.

setReference

public void setReference(int ref)

Sets the reference of the register to start reading from with this ReadCoilsRequest.

Parameters:

ref - the reference of the register to start reading from.

getReference

public int getReference()

Returns the reference of the register to to start reading from with this ReadCoilsRequest.

Returns:

the reference of the register to start reading from as int.

getBitCount

public int getBitCount()

Returns the number of bits (i.e. input discretes) read with the request.

Returns:

the number of bits that have been read.

getByteCount

public int getByteCount()

Returns the number of bytes required for packing the coil bits.

Returns:

the number of bytes required for packing the coil bits.

getCoilStatus

public boolean getCoilStatus(int index)
                      throws java.lang.IndexOutOfBoundsException

Returns the status of the given coil.

Parameters:

index - the index of the coil to be tested.

Returns:

true if set, false otherwise.

Throws:

java.lang.IndexOutOfBoundsException - if the given index is out of bounds.

setCoilStatus

public void setCoilStatus(int index,
                          boolean b)
                   throws java.lang.IndexOutOfBoundsException

Sets the coil status of the given coil.

Parameters:

index - the index of the coil to be set/reset.

b - true if to be set, false for reset.

Throws:

java.lang.IndexOutOfBoundsException - if the given index is out of bounds.

getCoils

public BitVector getCoils()

Returns the BitVector instance holding coil status information.

Returns:

the coils status as BitVector instance.

setCoils

public void setCoils(BitVector bv)

Sets the BitVector instance holding coil status information.

Parameters:

bv - a BitVector instance holding coil status info.

writeData

public void writeData(java.io.DataOutput dout)
               throws java.io.IOException

Description copied from class: ModbusMessageImpl

Writes the subclass specific data to the given DataOutput.

Specified by:

writeData in class ModbusMessageImpl

Parameters:

dout - the DataOutput to be written to.

Throws:

java.io.IOException - if an I/O related error occurs.

readData

public void readData(java.io.DataInput din)
              throws java.io.IOException

Description copied from class: ModbusMessageImpl

Reads the subclass specific data from the given DataInput instance.

Specified by:

readData in class ModbusMessageImpl

Parameters:

din - the DataInput to read from.

Throws:

java.io.IOException - if an I/O related error occurs.