org.lsst.ccs.subsystems.fcs

Class Loader

java.lang.Object

org.lsst.ccs.subsystems.fcs.Loader

All Implemented Interfaces:

org.lsst.ccs.framework.HardwareController, org.lsst.ccs.framework.HasLifecycle, AlertRaiser, FilterHolder

public class Loader
extends Object
implements org.lsst.ccs.framework.HardwareController, FilterHolder, AlertRaiser, org.lsst.ccs.framework.HasLifecycle

This is the model for the loader in the Filter Exchange System. The loader is used to load a filter into the camera or to unload a filter from the camera.

Author:

virieux

Field Summary

Fields inherited from interface org.lsst.ccs.subsystems.fcs.common.AlertRaiser

alertSeparater

Constructor Summary

Constructors

Constructor and Description
Loader()

Method Summary

Modifier and Type	Method and Description
void	checkClosedOnVoid()
void	checkConditionsForCarrierMotion(int targetPosition) Checks if the loader carrier can move.
void	checkConditionsForOpeningHooks() Check if the clamp can be opened.
void	checkConditionsForUnclampingHooks()
void	checkConnectedOnCamera() Check if loader is connected on camera.
void	checkHaltRequired()
void	checkLoaderNotEmpty() Check if the clamp can be closed.
void	checkStarted() CheckStarted is executed by completeInitialization when a first start has failed.
StatusDataPublishedByLoader	createStatusDataPublishedByLoader() Creates an Object to be published on the STATUS bus.
org.lsst.ccs.AlertService	getAlertService() return alertService
LoaderCarrier	getCarrier() Returns carrier.
LoaderClamp	getClamp() Returns clamp.
String	getName()
org.lsst.ccs.Subsystem	getSubsystem()
void	initializeGateway()
boolean	isAtHandoff() This method returns true if the autochanger trucks are at HANDOFF position, false otherwise.
boolean	isAtStandby() This method returns true if the autochanger trucks are at STANDBY position, false otherwise.
boolean	isAutochangerHoldingFilter() Return true if the autochanger is holding the filter.
boolean	isConnectedOnCamera() Returns the boolean field atHandoff.
boolean	isEmpty() Returns the boolean field empty.
boolean	isHoldingFilter() Return true if a filter is present and it is held by the loader clamp.
boolean	isInitialized()
void	locateHardware() This command has to be executed after the initialization phase and after the checkHardware command.
void	moveFilterToHandoff() move a filter from Storage position or a position between ENGAGED and STORAGE to HANDOFF position.
void	moveFilterToStorage() Move a filter from HANDOFF to STORAGE.
void	postStart() Check that plutoGateway is booted and initialize plutoGateway.
String	printHardwareState() Print list of hardware with initialization information.
void	publishData() Publish Data on status bus for trending data base and GUIs.
void	updateFCSStateToReady() Update FCS state and FCS readyness state and publish on the status bus.
void	updateStateAndCheckSensors()
void	updateStateWithSensors() This methods updates the carrier and clamp state in reading all the sensors.

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.HardwareController

checkHardware, checkStopped

Methods inherited from interface org.lsst.ccs.subsystems.fcs.common.AlertRaiser

clearAlarm, raiseAlarm, raiseAlarm, raiseAlarm, raiseAlarm, raiseAlarm, raiseAlarm, raiseWarning, raiseWarning, raiseWarning, raiseWarning, raiseWarning

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

build, init, postBuild, postInit, postStop, shutdownNow, start, stop

Constructor Detail

Loader

public Loader()

Method Detail

getAlertService

public org.lsst.ccs.AlertService getAlertService()

Description copied from interface: AlertRaiser

return alertService

Specified by:

getAlertService in interface AlertRaiser

Returns:

getName

public String getName()

Specified by:

getName in interface AlertRaiser

getSubsystem

public org.lsst.ccs.Subsystem getSubsystem()

Specified by:

getSubsystem in interface AlertRaiser

getCarrier

public LoaderCarrier getCarrier()

Returns carrier.

Returns:

carrier

getClamp

public LoaderClamp getClamp()

Returns clamp.

Returns:

isInitialized

@Command(type=QUERY,
         level=0,
         description="Return true if hardware (controllers and plutoGateway) is correctly initializedand homing of the controllers is done.")
public boolean isInitialized()

Returns:

true if hardware (controllers and plutoGateway) is correctly initialized and checkHardwareStateAndDoHomingIfPossible of the controllers is done.

isEmpty

@Command(type=QUERY,
         level=0,
         description="Return true if there is no filter in the loader. This command doesn\'t read again the sensors.")
public boolean isEmpty()

Returns the boolean field empty. If the empty boolean is being updated and waits for a response from a sensor, this methods waits until empty is updated. If the field empty is not being updated, it returns immediatly the field empty.

Returns:

empty

isConnectedOnCamera

@Command(type=QUERY,
         level=0,
         description="Return true if the loader is connected on the camera. This command doesn\'t read again the sensors.")
public boolean isConnectedOnCamera()

Returns the boolean field atHandoff. If the atHandoff boolean is being updated and waits for a response from a sensor, this methods waits until atHandoff is updated. If the field atHandoff is not being updated, it returns immediatly the field atHandoff.

Returns:

atHandoff

isAutochangerHoldingFilter

@Command(type=QUERY,
         level=0,
         description="Return true if the autochanger is holding the filter. This command doesn\'t read again the sensors.")
public boolean isAutochangerHoldingFilter()

Return true if the autochanger is holding the filter. This command doesn't read again the sensors.

Returns:

Throws:

FcsHardwareException

isHoldingFilter

@Command(type=QUERY,
         level=0,
         description="Return true if a filter is present and it is held by the loader clamp.")
public boolean isHoldingFilter()

Return true if a filter is present and it is held by the loader clamp.

Specified by:

isHoldingFilter in interface FilterHolder

Returns:

Throws:

FcsHardwareException

locateHardware

@Command(type=ACTION,
         level=1,
         description="Attention ! this commands does the homing of the controllers and might move hardware. Initialize loader hardware.",
         alias="homing")
public void locateHardware()

This command has to be executed after the initialization phase and after the checkHardware command. It can't be automaticaly executed during initialization phase because it's not compliant with the CCS requirement which says that the initialization of the subsystem can't make move hardware.

checkClosedOnVoid

public void checkClosedOnVoid()

checkHaltRequired

public void checkHaltRequired()

postStart

public void postStart()

Check that plutoGateway is booted and initialize plutoGateway. Read sensors and update clamp's lockStatus.

Specified by:

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

initializeGateway

public void initializeGateway()

checkStarted

public void checkStarted()

CheckStarted is executed by completeInitialization when a first start has failed. Because end user could have changed many things, we have to check again that all is correct.

Specified by:

checkStarted in interface org.lsst.ccs.framework.HardwareController

checkConnectedOnCamera

public void checkConnectedOnCamera()

Check if loader is connected on camera.

Throws:

RejectedCommandException - if not connected on camera

checkConditionsForCarrierMotion

@Command(type=QUERY,
         level=1,
         description="Check if the carrier can move.")
public void checkConditionsForCarrierMotion(int targetPosition)

Checks if the loader carrier can move.

Parameters:

targetPosition -

Throws:

FcsHardwareException

FailedCommandException

checkConditionsForOpeningHooks

@Command(type=QUERY,
         level=1,
         description="Check if the clamp can be opened.")
public void checkConditionsForOpeningHooks()

Check if the clamp can be opened.

Throws:

FcsHardwareException

checkConditionsForUnclampingHooks

public void checkConditionsForUnclampingHooks()

checkLoaderNotEmpty

@Command(type=QUERY,
         level=1,
         description="Check if the clamp can be closed.")
public void checkLoaderNotEmpty()

Check if the clamp can be closed. Clamp can be close if sensors are not in error and a filter is in the loader.

Throws:

FcsHardwareException

updateStateAndCheckSensors

public void updateStateAndCheckSensors()

updateStateWithSensors

@Command(type=ACTION,
         level=1,
         description="Update clamp state in reading sensors.")
public void updateStateWithSensors()

This methods updates the carrier and clamp state in reading all the sensors.

Specified by:

updateStateWithSensors in interface FilterHolder

Throws:

FcsHardwareException

updateFCSStateToReady

@Command(type=ACTION,
         level=1,
         description="Update FCS state and FCS readyness state and publishes on the status bus.")
public void updateFCSStateToReady()

Update FCS state and FCS readyness state and publish on the status bus. Check that Loader hardware is ready to be operated and moved. This means that : - all CAN open devices are booted, identified and initialized, - checkHardwareStateAndDoHomingIfPossible has been done on the controllers.

moveFilterToHandoff

@Command(type=ACTION,
         level=1,
         description="Move a filter from STORAGE to HANDOFF. This command executes sequence of actions :\n- check initial conditions (a filter, at STORAGE) \n- move carrier to ENGAGED with high speed\n- unclamp filter \n- move slowly filter to HANDOFF. ")
public void moveFilterToHandoff()

move a filter from Storage position or a position between ENGAGED and STORAGE to HANDOFF position. This command executes sequence of actions : - check initial conditions (a filter, at STORAGE) - move carrier to ENGAGED - unclamp filter (not open, just unclamp to release constraint on filter) - move slowly filter to HANDOFF.

moveFilterToStorage

@Command(type=ACTION,
         level=1)
public void moveFilterToStorage()

Move a filter from HANDOFF to STORAGE. - checks initial conditions : a filter is at HANDOFF, autochanger is holding the filter, - close clamp - move filter slowly to ENGAGED - clamp - move filter to STORAGE with high speed.

createStatusDataPublishedByLoader

public StatusDataPublishedByLoader createStatusDataPublishedByLoader()

Creates an Object to be published on the STATUS bus.

Returns:

publishData

public void publishData()

Publish Data on status bus for trending data base and GUIs.

isAtHandoff

public boolean isAtHandoff()

Description copied from interface: FilterHolder

This method returns true if the autochanger trucks are at HANDOFF position, false otherwise.

Specified by:

isAtHandoff in interface FilterHolder

Returns:

isAtStandby

public boolean isAtStandby()

Description copied from interface: FilterHolder

This method returns true if the autochanger trucks are at STANDBY position, false otherwise.

Specified by:

isAtStandby in interface FilterHolder

Returns:

printHardwareState

@Command(type=QUERY,
         level=1,
         description="Print list of hardware with initialization information.")
public String printHardwareState()

Print list of hardware with initialization information.

Returns: