001package jmri.jmrix.acela; 002 003import jmri.implementation.AbstractSensor; 004 005/** 006 * Extend jmri.AbstractSensor for Acela systems 007 * 008 * @author Bob Jacobsen Copyright (C) 2003 009 * @author Bob Coleman Copyright (C) 2007, 2008 Based heavily on CMRI serial 010 * example. 011 */ 012public class AcelaSensor extends AbstractSensor { 013 014 public AcelaSensor(String systemName) { 015 super(systemName); 016 _knownState = UNKNOWN; 017 } 018 019 public AcelaSensor(String systemName, String userName) { 020 super(systemName, userName); 021 _knownState = UNKNOWN; 022 } 023 024 /** 025 * Request an update on status. 026 * <p> 027 * Since status is continually being updated, this isn't active now. 028 */ 029 @Override 030 public void requestUpdateFromLayout() { 031 } 032 033}