package com.szpg.plc.message.command;

import com.szpg.plc.message.AppCommand;
import com.szpg.plc.message.AppMessageConstants;
import com.szpg.plc.message.command.read.ReadCH4ParamCommand;
import com.szpg.plc.message.command.read.ReadCH4StatusCommand;

public abstract class ReadMemoryCommand extends AppCommand {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 8230263832472237420L;
	
	private byte memoryArea; //读取的内存区域代码
	private String startAddress; //起始地址
	private int countWord; //读取的字数量/1WORD=2BYTE
	private int countBit; //读取的位数量

	public byte getMemoryArea() {
		return memoryArea;
	}

	public void setMemoryArea(byte memoryArea) {
		this.memoryArea = memoryArea;
	}

	public String getStartAddress() {
		return startAddress;
	}

	public void setStartAddress(String startAddress) {
		this.startAddress = startAddress;
	}

	public int getCountWord() {
		return countWord;
	}

	public void setCountWord(int countWord) {
		this.countWord = countWord;
	}

	public int getCountBit() {
		return countBit;
	}

	public void setCountBit(int countBit) {
		this.countBit = countBit;
	}

	public static ReadMemoryCommand getInstance(String type) {
		switch (type) {
			case AppMessageConstants.CMD_TYPE_READCH4PARAM:
				return new ReadCH4ParamCommand();
				
			case AppMessageConstants.CMD_TYPE_READCH4STATUS:
				return new ReadCH4StatusCommand();
			
			default: 
				return null;
		}
	}
	
	public abstract String getCommandType();
}