net.wimpi.modbus.msg
Class ReadCoilsResponse

java.lang.Object
  net.wimpi.modbus.msg.ModbusMessageImpl
      net.wimpi.modbus.msg.ModbusResponse
          net.wimpi.modbus.msg.ReadCoilsResponse

All Implemented Interfaces:

ModbusMessage, Transportable

public final class ReadCoilsResponse

extends ModbusResponse

Class implementing a ReadCoilsResponse. The implementation directly correlates with the class 1 function read coils (FC 1). It encapsulates the corresponding response 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

ReadCoilsResponse()
Constructs a new ReadCoilsResponse instance.

ReadCoilsResponse(int count)
Constructs a new ReadCoilsResponse instance with a given count of coils (i.e. bits).

Method Summary

int	getBitCount() Returns the number of bits (i.e. coils) read with the request.
BitVector	getCoils() Returns the BitVector that stores the collection of bits that have been read.
boolean	getCoilStatus(int index) Convenience method that returns the state of the bit at the given index.
void	readData(java.io.DataInput din) Reads the subclass specific data from the given DataInput instance.
void	setCoilStatus(int index, boolean b) Sets the status of the given coil.
void	writeData(java.io.DataOutput dout) Writes the subclass specific data to the given DataOutput.

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

createModbusResponse, setMessage

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

ReadCoilsResponse

public ReadCoilsResponse()

Constructs a new ReadCoilsResponse instance.

ReadCoilsResponse

public ReadCoilsResponse(int count)

Constructs a new ReadCoilsResponse instance with a given count of coils (i.e. bits).

Parameters:

count - the number of bits to be read.

Method Detail

getBitCount

public int getBitCount()

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

Returns:

the number of bits that have been read.

getCoils

public BitVector getCoils()

Returns the BitVector that stores the collection of bits that have been read.

Returns:

the BitVector holding the bits that have been read.

getCoilStatus

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

Convenience method that returns the state of the bit at the given index.

Parameters:

index - the index of the coil for which the status should be returned.

Returns:

true if set, false otherwise.

Throws:

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

setCoilStatus

public void setCoilStatus(int index,
                          boolean b)

Sets the status of the given coil.

Parameters:

index - the index of the coil to be set.

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

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.