001package jmri.jmrix.secsi; 002 003import jmri.implementation.AbstractSensor; 004 005/** 006 * Extend jmri.AbstractSensor for serial systems. 007 * 008 * @author Bob Jacobsen Copyright (C) 2003, 2006, 2007, 2008 009 */ 010public class SerialSensor extends AbstractSensor { 011 012 public SerialSensor(String systemName, SecsiSystemConnectionMemo _memo) { 013 super(systemName); 014 _knownState = UNKNOWN; 015 } 016 017 public SerialSensor(String systemName, String userName, SecsiSystemConnectionMemo _memo) { 018 super(systemName, userName); 019 _knownState = UNKNOWN; 020 } 021 022 /** 023 * Request an update on status. 024 * <p> 025 * Since status is continually being updated, this isn't active now. 026 * Eventually, we may want to have this move the related AIU to the top of 027 * the polling queue. 028 */ 029 @Override 030 public void requestUpdateFromLayout() { 031 } 032 033}