001package jmri.jmrix.powerline;
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 Converted to
009 * multiple connection
010 * @author kcameron Copyright (C) 2011
011 */
012public class SerialSensor extends AbstractSensor {
013
014    public SerialSensor(String systemName, SerialTrafficController tc) {
015        super(systemName);
016        _knownState = UNKNOWN;
017    }
018
019    public SerialSensor(String systemName, SerialTrafficController tc, 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     * Eventually, we may want to have this move the related AIU to the top of
029     * the polling queue.
030     */
031    @Override
032    public void requestUpdateFromLayout() {
033    }
034
035}
036
037