/***
* Copyright 2002-2010 jamod development team
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***/
package net.wimpi.modbus.procimg;
/**
* Interface defining a process image
* in an object oriented manner.
* <p>
* The process image is understood as a shared
* memory area used form communication between
* slave and master or device side.
*
* @author Dieter Wimberger
* @version @version@ (@date@)
*/
public interface ProcessImage {
/**
* Returns a range of <tt>DigitalOut</tt> instances.
* <p>
*
* @param offset the start offset.
* @param count the amount of <tt>DigitalOut</tt> from the offset.
*
* @return an array of <tt>DigitalOut</tt> instances.
*
* @throws IllegalAddressException if the range from offset
* to offset+count is non existant.
*/
public DigitalOut[] getDigitalOutRange(int offset, int count) throws IllegalAddressException;
/**
* Returns the <tt>DigitalOut</tt> instance at the given
* reference.
* <p>
*
* @param ref the reference.
*
* @return the <tt>DigitalOut</tt> instance at the given address.
*
* @throws IllegalAddressException if the reference is invalid.
*/
public DigitalOut getDigitalOut(int ref) throws IllegalAddressException;
/**
* Returns the number of <tt>DigitalOut</tt> instances
* in this <tt>ProcessImage</tt>.
*
* @return the number of digital outs as <tt>int</tt>.
*/
public int getDigitalOutCount();
/**
* Returns a range of <tt>DigitalIn</tt> instances.
* <p>
*
* @param offset the start offset.
* @param count the amount of <tt>DigitalIn</tt> from the offset.
*
* @return an array of <tt>DigitalIn</tt> instances.
*
* @throws IllegalAddressException if the range from offset
* to offset+count is non existant.
*/
public DigitalIn[] getDigitalInRange(int offset, int count) throws IllegalAddressException;
/**
* Returns the <tt>DigitalIn</tt> instance at the given
* reference.
* <p>
*
* @param ref the reference.
*
* @return the <tt>DigitalIn</tt> instance at the given address.
*
* @throws IllegalAddressException if the reference is invalid.
*/
public DigitalIn getDigitalIn(int ref) throws IllegalAddressException;
/**
* Returns the number of <tt>DigitalIn</tt> instances
* in this <tt>ProcessImage</tt>.
*
* @return the number of digital ins as <tt>int</tt>.
*/
public int getDigitalInCount();
/**
* Returns a range of <tt>InputRegister</tt> instances.
* <p>
*
* @param offset the start offset.
* @param count the amount of <tt>InputRegister</tt>
* from the offset.
*
* @return an array of <tt>InputRegister</tt> instances.
*
* @throws IllegalAddressException if the range from offset
* to offset+count is non existant.
*/
public InputRegister[] getInputRegisterRange(int offset, int count) throws IllegalAddressException;
/**
* Returns the <tt>InputRegister</tt> instance at the given
* reference.
* <p>
*
* @param ref the reference.
*
* @return the <tt>InputRegister</tt> instance at the given address.
*
* @throws IllegalAddressException if the reference is invalid.
*/
public InputRegister getInputRegister(int ref) throws IllegalAddressException;
/**
* Returns the number of <tt>InputRegister</tt> instances
* in this <tt>ProcessImage</tt>.
*
* @return the number of input registers as <tt>int</tt>.
*/
public int getInputRegisterCount();
/**
* Returns a range of <tt>Register</tt> instances.
* <p>
*
* @param offset the start offset.
* @param count the amount of <tt>Register</tt> from the offset.
*
* @return an array of <tt>Register</tt> instances.
*
* @throws IllegalAddressException if the range from offset
* to offset+count is non existant.
*/
public Register[] getRegisterRange(int offset, int count) throws IllegalAddressException;
/**
* Returns the <tt>Register</tt> instance at the given
* reference.
* <p>
*
* @param ref the reference.
*
* @return the <tt>Register</tt> instance at the given address.
*
* @throws IllegalAddressException if the reference is invalid.
*/
public Register getRegister(int ref) throws IllegalAddressException;
/**
* Returns the number of <tt>Register</tt> instances
* in this <tt>ProcessImage</tt>.
*
* @return the number of registers as <tt>int</tt>.
*/
public int getRegisterCount();
}// interface ProcessImage