org.lsst.ccs.subsystem.refrig

Class ChillerPlutoDevice

java.lang.Object

org.lsst.ccs.monitor.Device

org.lsst.ccs.subsystem.common.devices.pluto.PlutoDevice

org.lsst.ccs.subsystem.refrig.ChillerPlutoDevice

All Implemented Interfaces:

EventListener, org.lsst.ccs.framework.HasLifecycle, org.lsst.ccs.services.alert.AlertListener

public class ChillerPlutoDevice
extends org.lsst.ccs.subsystem.common.devices.pluto.PlutoDevice
implements org.lsst.ccs.services.alert.AlertListener

Handles the chiller system Pluto PLC.

Author:

Owen Saxton

Field Summary

Fields inherited from class org.lsst.ccs.subsystem.common.devices.pluto.PlutoDevice

areas, node, plu

Fields inherited from class org.lsst.ccs.monitor.Device

alertOfflineId, alertService, configService, fullName, inited, lineMask, lineState, lineWarm, log, mon, name, path, s

Constructor Summary

Constructors

Constructor and Description
ChillerPlutoDevice() Constructor.

Method Summary

Modifier and Type	Method and Description
void	clearAllLatches() Clears all latched conditions.
void	clearLatch(int cond) Clears a latched condition.
int	getErrorCode()
ChillerPLCState	getPlcState() Gets the PLC state.
SwitchState	getSwitchState(int sw) Gets the state of a switch.
void	init() Init phase.
Boolean	isConditionActive(int cond) Gets whether a condition is active.
Boolean	isLatchActive(int cond) Gets whether a latched condition is active.
Boolean	isLatchLatched(int cond) Gets whether a latched condition is latched.
Boolean	isPlcActive() Tests whether the PLC is active
protected Boolean	isSwitchOn(int sw) Gets the on state of a switch.
void	onAlert(org.lsst.ccs.services.alert.AlertEvent event) Alert event handler.
protected void	setSwitchOn(int sw, boolean on) Sets a switch on or off.
boolean	updateState(ChillerPlcState plcState) Updates the PLC state.

Methods inherited from class org.lsst.ccs.subsystem.common.devices.pluto.PlutoDevice

checkChannel, checkHwLine, close, initDevice, initialize, isHwLineSet, isPLCActive, readAddBit, readAddInt, readAddWord, readBit, readChannel, setHwLine, toggleBit, writeBit, writeRegister

Methods inherited from class org.lsst.ccs.monitor.Device

addLine, checkChannel, checkLine, checkTimeout, configure, disable, dropChannel, dropChannel, enable, getDeviceMonitorUpdateTasks, getFullName, getGroupForChannel, getMonitorUpdateTasksForChannels, getName, getOutputLines, getPath, initChannel, initChannel, initChannel, initSensors, isEnabled, isLineSet, isOnline, isTimeout, readChannel, readChannelGroup, readChannelGroup, readChannelNow, setDisabled, setLine, setLineWarm, setOnline, setOutputLines, start, testOnline

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.lsst.ccs.framework.HasLifecycle

build, postBuild, postInit, postShutdown, postStart, shutdown

Constructor Detail

ChillerPlutoDevice

public ChillerPlutoDevice()

Constructor.

Method Detail

init

public void init()

Init phase.

Specified by:

init in interface org.lsst.ccs.framework.HasLifecycle

Overrides:

init in class org.lsst.ccs.monitor.Device

isPlcActive

public Boolean isPlcActive()

Tests whether the PLC is active

Returns:

Whether the PLC is active, or null if offline

getPlcState

public ChillerPLCState getPlcState()

Gets the PLC state.

Returns:

The state

setSwitchOn

protected void setSwitchOn(int sw,
                           boolean on)

Sets a switch on or off. For the protection Pluto, this is implemented as a pair of push buttons, one for on, one for off.

Parameters:

sw - The switch number.

on - The on state to set: true or false

getSwitchState

public SwitchState getSwitchState(int sw)

Gets the state of a switch.

Parameters:

sw - The switch number.

Returns:

The switch state

isSwitchOn

protected Boolean isSwitchOn(int sw)

Gets the on state of a switch. The on/off state is not the state of the bit that was toggled, but is read back directly from the PLC output line.

Parameters:

sw - The switch number.

Returns:

Whether the switch is on

isLatchActive

public Boolean isLatchActive(int cond)

Gets whether a latched condition is active.

Parameters:

cond - The condition number

Returns:

Whether active - indicated by the bit being 0

isLatchLatched

public Boolean isLatchLatched(int cond)

Gets whether a latched condition is latched.

Parameters:

cond - The condition number

Returns:

Whether latched - indicated by the bit being 1

clearLatch

public void clearLatch(int cond)

Clears a latched condition.

Parameters:

cond - The condition number

clearAllLatches

public void clearAllLatches()

Clears all latched conditions.

isConditionActive

public Boolean isConditionActive(int cond)

Gets whether a condition is active.

Parameters:

cond - The condition number

Returns:

Whether active - indicated by the bit being 1

getErrorCode

public int getErrorCode()

updateState

public boolean updateState(ChillerPlcState plcState)

Updates the PLC state. This is to be called periodically to keep the GUI updated

Parameters:

plcState - The PLC state to be updated

Returns:

Whether the state changed

onAlert

public void onAlert(org.lsst.ccs.services.alert.AlertEvent event)

Alert event handler. Resets PLC latch when corresponding alert is cleared.

Specified by:

onAlert in interface org.lsst.ccs.services.alert.AlertListener

Parameters:

event - The alert event