MTConnectDevices_1.4_1.0.xsd

<?xml version='1.0' encoding='UTF-8'?>
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<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns='urn:mtconnect.org:MTConnectDevices:1.4' xmlns:mt='urn:mtconnect.org:MTConnectDevices:1.4' targetNamespace='urn:mtconnect.org:MTConnectDevices:1.4' elementFormDefault='qualified' attributeFormDefault='unqualified'>
  <xs:element name='MTConnectDevices' type='MTConnectDevicesType'>
    <xs:annotation>
      <xs:documentation>
        The root node for MTConnect
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:simpleType name='SenderType'>
    <xs:annotation>
      <xs:documentation>
        The sender of the message
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='CreationTimeType'>
    <xs:annotation>
      <xs:documentation>
        The date and time the document was created
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:dateTime'/>
  </xs:simpleType>
  <xs:simpleType name='SequenceType'>
    <xs:annotation>
      <xs:documentation>
        A sequence number
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'>
      <xs:minInclusive value='1'/>
      <xs:maxExclusive value='18446744073709551615'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='TestIndicatorType'>
    <xs:annotation>
      <xs:documentation>
        A debugging flag for testing.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:boolean'/>
  </xs:simpleType>
  <xs:simpleType name='InstanceIdType'>
    <xs:annotation>
      <xs:documentation>
        The instance number of the agent, used for fault tolerance
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'>
      <xs:minInclusive value='1'/>
      <xs:maxExclusive value='18446744073709551615'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='BufferSizeType'>
    <xs:annotation>
      <xs:documentation>
        The size of the agents buffer
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'>
      <xs:minInclusive value='1'/>
      <xs:maxExclusive value='4294967295'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='TimestampType'>
    <xs:annotation>
      <xs:documentation>
        The time the sample was reported
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:dateTime'/>
  </xs:simpleType>
  <xs:simpleType name='OccurrenceTimeType'>
    <xs:annotation>
      <xs:documentation>
        The time a sample occurred
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:dateTime'/>
  </xs:simpleType>
  <xs:simpleType name='VersionType'>
    <xs:annotation>
      <xs:documentation>
        A version number
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:NMTOKEN'/>
  </xs:simpleType>
  <xs:simpleType name='NameType'>
    <xs:annotation>
      <xs:documentation>
        A short name for any element
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:NMTOKEN'/>
  </xs:simpleType>
  <xs:simpleType name='UuidType'>
    <xs:annotation>
      <xs:documentation>
        A universally unique id that uniquely identifies the element for
        it&apos;s entire life
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='SerialNumberType'>
    <xs:annotation>
      <xs:documentation>
        A serial number for a piece of equipment
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='ItemSourceType'>
    <xs:annotation>
      <xs:documentation>
        The measurement source
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='RateType'>
    <xs:annotation>
      <xs:documentation>
        A sample rate in milliseconds per sample
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:float'/>
  </xs:simpleType>
  <xs:simpleType name='ComponentIdType'>
    <xs:annotation>
      <xs:documentation>
        The id of the component (maps to the id from probe)
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:ID'/>
  </xs:simpleType>
  <xs:simpleType name='IDType'>
    <xs:annotation>
      <xs:documentation>
        An identifier
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:ID'/>
  </xs:simpleType>
  <xs:simpleType name='SignificantDigitsValueType'>
    <xs:annotation>
      <xs:documentation>
        The number significant digits
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'/>
  </xs:simpleType>
  <xs:simpleType name='CompositionIdType'>
    <xs:annotation>
      <xs:documentation>
        The item&apos;s reference to the Device model composition
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:NMTOKEN'/>
  </xs:simpleType>
  <xs:simpleType name='AssetIdType'>
    <xs:annotation>
      <xs:documentation>
        The unique id of the asset
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='AssetAttrType'>
    <xs:annotation>
      <xs:documentation>
        An asset type
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='AssetBufferSizeType'>
    <xs:annotation>
      <xs:documentation>
        The maximum number of assets
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'>
      <xs:minInclusive value='1'/>
      <xs:maxExclusive value='4294967295'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='AssetCountAttrType'>
    <xs:annotation>
      <xs:documentation>
        The number of assets
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'>
      <xs:minInclusive value='0'/>
      <xs:maxExclusive value='4294967295'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DescriptionTextType'>
    <xs:annotation>
      <xs:documentation>
        A description
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemExtType'>
    <xs:annotation>
      <xs:documentation>
        An extension point for data item types
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:pattern value='[a-ln-z]:[A-Z_0-9]+'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemStatsExtType'>
    <xs:annotation>
      <xs:documentation>
        An extension point for data item statistics types
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:pattern value='[a-ln-z]:[A-Z_0-9]+'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemEnumTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        The types of measurements available
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='ACCELERATION'/>
      <xs:enumeration value='ACTIVE_AXES'/>
      <xs:enumeration value='ALARM'/>
      <xs:enumeration value='AMPERAGE'/>
      <xs:enumeration value='ANGLE'/>
      <xs:enumeration value='ANGULAR_ACCELERATION'/>
      <xs:enumeration value='ANGULAR_VELOCITY'/>
      <xs:enumeration value='AVAILABILITY'/>
      <xs:enumeration value='AXIS_FEEDRATE'/>
      <xs:enumeration value='BLOCK'/>
      <xs:enumeration value='CODE'/>
      <xs:enumeration value='DIRECTION'/>
      <xs:enumeration value='DOOR_STATE'/>
      <xs:enumeration value='EMERGENCY_STOP'/>
      <xs:enumeration value='EXECUTION'/>
      <xs:enumeration value='FREQUENCY'/>
      <xs:enumeration value='PART_COUNT'/>
      <xs:enumeration value='PART_ID'/>
      <xs:enumeration value='PATH_FEEDRATE'/>
      <xs:enumeration value='PATH_POSITION'/>
      <xs:enumeration value='PATH_MODE'/>
      <xs:enumeration value='LINE'/>
      <xs:enumeration value='CONTROLLER_MODE'/>
      <xs:enumeration value='LOAD'/>
      <xs:enumeration value='MESSAGE'/>
      <xs:enumeration value='POSITION'/>
      <xs:enumeration value='POWER_STATUS'/>
      <xs:enumeration value='POWER_STATE'/>
      <xs:enumeration value='PRESSURE'/>
      <xs:enumeration value='RESET'/>
      <xs:enumeration value='PROGRAM'/>
      <xs:enumeration value='PROGRAM_COMMENT'/>
      <xs:enumeration value='ROTARY_MODE'/>
      <xs:enumeration value='COUPLED_AXES'/>
      <xs:enumeration value='AXIS_COUPLING'/>
      <xs:enumeration value='SPINDLE_SPEED'/>
      <xs:enumeration value='TEMPERATURE'/>
      <xs:enumeration value='TORQUE'/>
      <xs:enumeration value='TOOL_ASSET_ID'/>
      <xs:enumeration value='TOOL_ID'/>
      <xs:enumeration value='TOOL_NUMBER'/>
      <xs:enumeration value='VELOCITY'/>
      <xs:enumeration value='VIBRATION'/>
      <xs:enumeration value='VOLTAGE'/>
      <xs:enumeration value='WATTAGE'/>
      <xs:enumeration value='ACCUMULATED_TIME'/>
      <xs:enumeration value='ACTUATOR_STATE'/>
      <xs:enumeration value='ASSET_CHANGED'/>
      <xs:enumeration value='CONCENTRATION'/>
      <xs:enumeration value='CONDUCTIVITY'/>
      <xs:enumeration value='DISPLACEMENT'/>
      <xs:enumeration value='ELECTRICAL_ENERGY'/>
      <xs:enumeration value='FILL_LEVEL'/>
      <xs:enumeration value='FLOW'/>
      <xs:enumeration value='LINEAR_FORCE'/>
      <xs:enumeration value='MASS'/>
      <xs:enumeration value='PH'/>
      <xs:enumeration value='POWER_FACTOR'/>
      <xs:enumeration value='RESISTANCE'/>
      <xs:enumeration value='ROTARY_VELOCITY'/>
      <xs:enumeration value='SOUND_PRESSURE'/>
      <xs:enumeration value='STRAIN'/>
      <xs:enumeration value='TILT'/>
      <xs:enumeration value='VOLT_AMPERE'/>
      <xs:enumeration value='VOLT_AMPERE_REACTIVE'/>
      <xs:enumeration value='WATT_SECOND'/>
      <xs:enumeration value='VISCOSITY'/>
      <xs:enumeration value='CLOCK_TIME'/>
      <xs:enumeration value='COMMUNICATIONS'/>
      <xs:enumeration value='LOGIC_PROGRAM'/>
      <xs:enumeration value='MOTION_PROGRAM'/>
      <xs:enumeration value='HARDWARE'/>
      <xs:enumeration value='SYSTEM'/>
      <xs:enumeration value='LEVEL'/>
      <xs:enumeration value='ACTUATOR'/>
      <xs:enumeration value='ROTARY_VELOCITY_OVERRIDE'/>
      <xs:enumeration value='PATH_FEEDRATE_OVERRIDE'/>
      <xs:enumeration value='AXIS_FEEDRATE_OVERRIDE'/>
      <xs:enumeration value='PART_ASSET_ID'/>
      <xs:enumeration value='PROGRAM_EDIT'/>
      <xs:enumeration value='PROGRAM_EDIT_NAME'/>
      <xs:enumeration value='CLOCK_TIME'/>
      <xs:enumeration value='CHUCK_STATE'/>
      <xs:enumeration value='END_OF_BAR'/>
      <xs:enumeration value='AUXILIARY_END_OF_BAR'/>
      <xs:enumeration value='AXIS_INTERLOCK'/>
      <xs:enumeration value='MANUAL_CHUCK_UNCLAMP_INTERLOCK'/>
      <xs:enumeration value='LENGTH'/>
      <xs:enumeration value='AXIS_STATE'/>
      <xs:enumeration value='INTERFACE_STATE'/>
      <xs:enumeration value='FUNCTIONAL_MODE'/>
      <xs:enumeration value='WORKHOLDING_ID'/>
      <xs:enumeration value='PALLET_ID'/>
      <xs:enumeration value='OPERATOR_ID'/>
      <xs:enumeration value='ASSET_REMOVED'/>
      <xs:enumeration value='PROGRAM_HEADER'/>
      <xs:enumeration value='MATERIAL_FEED'/>
      <xs:enumeration value='MATERIAL_CHANGE'/>
      <xs:enumeration value='MATERIAL_RETRACT'/>
      <xs:enumeration value='PART_CHANGE'/>
      <xs:enumeration value='OPEN_DOOR'/>
      <xs:enumeration value='CLOSE_DOOR'/>
      <xs:enumeration value='OPEN_CHUCK'/>
      <xs:enumeration value='CLOSE_CHUCK'/>
      <xs:enumeration value='MATERIAL_LOAD'/>
      <xs:enumeration value='MATERIAL_UNLOAD'/>
      <xs:enumeration value='TRANSFORMATION'/>
      <xs:enumeration value='SINGLE_BLOCK'/>
      <xs:enumeration value='DRY_RUN'/>
      <xs:enumeration value='OPTIONAL_STOP'/>
      <xs:enumeration value='MACHINE_AXIS_LOCK'/>
      <xs:enumeration value='TOOL_CHANGE_STOP'/>
      <xs:enumeration value='LINE_NUMBER'/>
      <xs:enumeration value='LINE_LABEL'/>
      <xs:enumeration value='BLOCK_COUNT'/>
      <xs:enumeration value='USER'/>
      <xs:enumeration value='PART_NUMBER'/>
      <xs:enumeration value='EQUIPMENT_TIMER'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemEnumType'>
    <xs:annotation>
      <xs:documentation>
        The types of measurements available
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='DataItemEnumTypeEnum DataItemExtType'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemSubEnumTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        The sub-types for a measurement
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='ACTUAL'/>
      <xs:enumeration value='COMMANDED'/>
      <xs:enumeration value='MAXIMUM'/>
      <xs:enumeration value='MINIMUM'/>
      <xs:enumeration value='OTHER'/>
      <xs:enumeration value='OVERRIDE'/>
      <xs:enumeration value='PROBE'/>
      <xs:enumeration value='TARGET'/>
      <xs:enumeration value='GOOD'/>
      <xs:enumeration value='BAD'/>
      <xs:enumeration value='ALL'/>
      <xs:enumeration value='LINE'/>
      <xs:enumeration value='CONTROL'/>
      <xs:enumeration value='ALTERNATING'/>
      <xs:enumeration value='DIRECT'/>
      <xs:enumeration value='WEIGHT'/>
      <xs:enumeration value='VOLUME'/>
      <xs:enumeration value='MOLE'/>
      <xs:enumeration value='KINETIC'/>
      <xs:enumeration value='DYNAMIC'/>
      <xs:enumeration value='NO_SCALE'/>
      <xs:enumeration value='A_SCALE'/>
      <xs:enumeration value='B_SCALE'/>
      <xs:enumeration value='C_SCALE'/>
      <xs:enumeration value='D_SCALE'/>
      <xs:enumeration value='REQUEST'/>
      <xs:enumeration value='RESPONSE'/>
      <xs:enumeration value='REMAINING'/>
      <xs:enumeration value='JOG'/>
      <xs:enumeration value='RAPID'/>
      <xs:enumeration value='PROGRAMMED'/>
      <xs:enumeration value='PRIMARY'/>
      <xs:enumeration value='AUXILIARY'/>
      <xs:enumeration value='MANUAL_UNCLAMP'/>
      <xs:enumeration value='WORKPIECE'/>
      <xs:enumeration value='FIXTURE'/>
      <xs:enumeration value='TOOL'/>
      <xs:enumeration value='ABSOLUTE'/>
      <xs:enumeration value='RELATIVE'/>
      <xs:enumeration value='TOOL_EDGE'/>
      <xs:enumeration value='TOOL_GROUP'/>
      <xs:enumeration value='ROTARY'/>
      <xs:enumeration value='LINEAR'/>
      <xs:enumeration value='LOADED'/>
      <xs:enumeration value='WORKING'/>
      <xs:enumeration value='OPERATING'/>
      <xs:enumeration value='POWERED'/>
      <xs:enumeration value='DELAY'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemSubEnumType'>
    <xs:annotation>
      <xs:documentation>
        The sub-types for a measurement
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='DataItemSubEnumTypeEnum DataItemExtType'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemStatisticsTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        Statistical operations on data
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='MINIMUM'/>
      <xs:enumeration value='MAXIMUM'/>
      <xs:enumeration value='AVERAGE'/>
      <xs:enumeration value='STANDARD_DEVIATION'/>
      <xs:enumeration value='ROOT_MEAN_SQUARE'/>
      <xs:enumeration value='MEAN'/>
      <xs:enumeration value='MODE'/>
      <xs:enumeration value='RANGE'/>
      <xs:enumeration value='KURTOSIS'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemStatisticsType'>
    <xs:annotation>
      <xs:documentation>
        Statistical operations on data
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='DataItemStatisticsTypeEnum DataItemStatsExtType'/>
  </xs:simpleType>
  <xs:simpleType name='UnitsExtType'>
    <xs:annotation>
      <xs:documentation>
        An extension point for data item types
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:pattern value='x:[A-Z_0-9]+'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='UnitsTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        The units supported
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='AMPERE'/>
      <xs:enumeration value='CELSIUS'/>
      <xs:enumeration value='COUNT'/>
      <xs:enumeration value='DEGREE'/>
      <xs:enumeration value='DEGREE/SECOND'/>
      <xs:enumeration value='DEGREE/SECOND^2'/>
      <xs:enumeration value='HERTZ'/>
      <xs:enumeration value='JOULE'/>
      <xs:enumeration value='KILOGRAM'/>
      <xs:enumeration value='LITER'/>
      <xs:enumeration value='LITER/SECOND'/>
      <xs:enumeration value='MILLIMETER'/>
      <xs:enumeration value='MILLIMETER/SECOND'/>
      <xs:enumeration value='MILLIMETER/SECOND^2'/>
      <xs:enumeration value='MILLIMETER_3D'/>
      <xs:enumeration value='NEWTON'/>
      <xs:enumeration value='NEWTON_METER'/>
      <xs:enumeration value='PASCAL'/>
      <xs:enumeration value='PERCENT'/>
      <xs:enumeration value='PH'/>
      <xs:enumeration value='REVOLUTION/MINUTE'/>
      <xs:enumeration value='SECOND'/>
      <xs:enumeration value='VOLT'/>
      <xs:enumeration value='WATT'/>
      <xs:enumeration value='OHM'/>
      <xs:enumeration value='SOUND_LEVEL'/>
      <xs:enumeration value='SIEMENS/METER'/>
      <xs:enumeration value='MICRO_RADIAN'/>
      <xs:enumeration value='PASCAL_SECOND'/>
      <xs:enumeration value='VOLT_AMPERE'/>
      <xs:enumeration value='VOLT_AMPERE_REACTIVE'/>
      <xs:enumeration value='WATT_SECOND'/>
      <xs:enumeration value='DECIBEL'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='UnitsType'>
    <xs:annotation>
      <xs:documentation>
        The units supported
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='UnitsTypeEnum UnitsExtType'/>
  </xs:simpleType>
  <xs:simpleType name='NativeUnitsTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        The units supported for the source equipment that can be converted into
        MTC Units.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='AMPERE'/>
      <xs:enumeration value='CELSIUS'/>
      <xs:enumeration value='COUNT'/>
      <xs:enumeration value='DEGREE'/>
      <xs:enumeration value='DEGREE/SECOND'/>
      <xs:enumeration value='DEGREE/SECOND^2'/>
      <xs:enumeration value='HERTZ'/>
      <xs:enumeration value='JOULE'/>
      <xs:enumeration value='KILOGRAM'/>
      <xs:enumeration value='LITER'/>
      <xs:enumeration value='LITER/SECOND'/>
      <xs:enumeration value='MILLIMETER'/>
      <xs:enumeration value='MILLIMETER/SECOND'/>
      <xs:enumeration value='MILLIMETER/SECOND^2'/>
      <xs:enumeration value='MILLIMETER_3D'/>
      <xs:enumeration value='NEWTON'/>
      <xs:enumeration value='NEWTON_METER'/>
      <xs:enumeration value='PASCAL'/>
      <xs:enumeration value='PERCENT'/>
      <xs:enumeration value='PH'/>
      <xs:enumeration value='REVOLUTION/MINUTE'/>
      <xs:enumeration value='SECOND'/>
      <xs:enumeration value='VOLT'/>
      <xs:enumeration value='WATT'/>
      <xs:enumeration value='OHM'/>
      <xs:enumeration value='SOUND_LEVEL'/>
      <xs:enumeration value='SIEMENS/METER'/>
      <xs:enumeration value='MICRO_RADIAN'/>
      <xs:enumeration value='PASCAL_SECOND'/>
      <xs:enumeration value='VOLT_AMPERE'/>
      <xs:enumeration value='VOLT_AMPERE_REACTIVE'/>
      <xs:enumeration value='WATT_SECOND'/>
      <xs:enumeration value='DECIBEL'/>
      <xs:enumeration value='CENTIPOISE'/>
      <xs:enumeration value='DEGREE/MINUTE'/>
      <xs:enumeration value='FAHRENHEIT'/>
      <xs:enumeration value='FOOT'/>
      <xs:enumeration value='FOOT/MINUTE'/>
      <xs:enumeration value='FOOT/SECOND'/>
      <xs:enumeration value='FOOT/SECOND^2'/>
      <xs:enumeration value='FOOT_3D'/>
      <xs:enumeration value='GALLON/MINUTE'/>
      <xs:enumeration value='INCH'/>
      <xs:enumeration value='INCH/MINUTE'/>
      <xs:enumeration value='INCH/SECOND'/>
      <xs:enumeration value='INCH/SECOND^2'/>
      <xs:enumeration value='INCH_3D'/>
      <xs:enumeration value='KILOWATT'/>
      <xs:enumeration value='KILOWATT_HOUR'/>
      <xs:enumeration value='MILLIMETER/MINUTE'/>
      <xs:enumeration value='OTHER'/>
      <xs:enumeration value='POUND'/>
      <xs:enumeration value='POUND/INCH^2'/>
      <xs:enumeration value='RADIAN'/>
      <xs:enumeration value='RADIAN/MINUTE'/>
      <xs:enumeration value='RADIAN/SECOND'/>
      <xs:enumeration value='RADIAN/SECOND^2'/>
      <xs:enumeration value='REVOLUTION/SECOND'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='NativeUnitsType'>
    <xs:annotation>
      <xs:documentation>
        The units supported for the source equipment that can be converted into
        MTC Units.
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='NativeUnitsTypeEnum UnitsExtType'/>
  </xs:simpleType>
  <xs:simpleType name='CoordinateSystemType'>
    <xs:annotation>
      <xs:documentation>
        The coordinate system to be used for the position
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='MACHINE'/>
      <xs:enumeration value='WORK'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemResetValueExtType'>
    <xs:annotation>
      <xs:documentation>
        An extension point for reset types
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:pattern value='[a-ln-z]:[A-Z_0-9]+'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemResetValueTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        The reset intervals
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='ACTION_COMPLETE'/>
      <xs:enumeration value='ANNUAL'/>
      <xs:enumeration value='DAY'/>
      <xs:enumeration value='MAINTENANCE'/>
      <xs:enumeration value='MANUAL'/>
      <xs:enumeration value='MONTH'/>
      <xs:enumeration value='POWER_ON'/>
      <xs:enumeration value='SHIFT'/>
      <xs:enumeration value='WEEK'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemResetValueType'>
    <xs:annotation>
      <xs:documentation>
        The reset intervals
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='DataItemResetValueTypeEnum DataItemResetValueExtType'/>
  </xs:simpleType>
  <xs:simpleType name='AssetCountValueType'>
    <xs:annotation>
      <xs:documentation>
        The number of assets
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'>
      <xs:minInclusive value='0'/>
      <xs:maxExclusive value='4294967295'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:complexType name='AssetCountsType'>
    <xs:annotation>
      <xs:documentation>
        The number of assets by type
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='AssetCount' type='AssetCountType' minOccurs='1' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            The number of assets for a given type
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='AssetCountType'>
    <xs:annotation>
      <xs:documentation>
        The count of assets for a certain type
      </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base='AssetCountValueType'>
        <xs:attribute name='assetType' type='AssetAttrType' use='required'/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
  <xs:complexType name='HeaderType'>
    <xs:annotation>
      <xs:documentation>
        Message header for protocol information
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='AssetCounts' type='AssetCountsType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The asset statistics
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
    <xs:attribute name='version' type='VersionType' use='required'/>
    <xs:attribute name='creationTime' type='CreationTimeType' use='required'/>
    <xs:attribute name='testIndicator' type='TestIndicatorType' use='optional'/>
    <xs:attribute name='instanceId' type='InstanceIdType' use='required'/>
    <xs:attribute name='sender' type='SenderType' use='required'/>
    <xs:attribute name='bufferSize' type='BufferSizeType' use='required'/>
    <xs:attribute name='assetBufferSize' type='AssetBufferSizeType' use='required'/>
    <xs:attribute name='assetCount' type='AssetCountAttrType' use='required'/>
  </xs:complexType>
  <xs:complexType name='MTConnectDevicesType'>
    <xs:annotation>
      <xs:documentation>
        The root node for MTConnect
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Header' type='HeaderType'>
        <xs:annotation>
          <xs:documentation>
            Protocol dependent information
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='Devices' type='DevicesType'>
        <xs:annotation>
          <xs:documentation>
            The equipment
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:simpleType name='StationType'>
    <xs:annotation>
      <xs:documentation>
        The station id for this device
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='Iso841ClassType'>
    <xs:annotation>
      <xs:documentation>
        The ISO 841 classification for the device
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'/>
  </xs:simpleType>
  <xs:simpleType name='ModelType'>
    <xs:annotation>
      <xs:documentation>
        The model name
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:complexType name='DevicesType'>
    <xs:annotation>
      <xs:documentation>
        The top level components
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Device' type='DeviceType' minOccurs='1' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            A piece of equipment
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:simpleType name='IdRefType'>
    <xs:annotation>
      <xs:documentation>
        A reference to an identifier
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:IDREF'/>
  </xs:simpleType>
  <xs:complexType name='ReferenceType' abstract='true'>
    <xs:annotation>
      <xs:documentation>
        An abstract reference type
      </xs:documentation>
    </xs:annotation>
    <xs:attribute name='idRef' type='IdRefType' use='required'/>
    <xs:attribute name='name' type='NameType' use='optional'/>
  </xs:complexType>
  <xs:element abstract='true' name='Reference' type='ReferenceType'>
    <xs:annotation>
      <xs:documentation>
        An abstract reference type
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ReferencesType'>
    <xs:annotation>
      <xs:documentation>
        A list of references
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref='Reference' minOccurs='1' maxOccurs='unbounded'/>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='DataItemRefType'>
    <xs:annotation>
      <xs:documentation>
        A data item reference
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='ReferenceType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='DataItemRef' type='DataItemRefType' substitutionGroup='Reference'>
    <xs:annotation>
      <xs:documentation>
        A data item reference
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ComponentRefType'>
    <xs:annotation>
      <xs:documentation>
        A data item reference
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='ReferenceType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='ComponentRef' type='ComponentRefType' substitutionGroup='Reference'>
    <xs:annotation>
      <xs:documentation>
        A data item reference
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ComponentType' abstract='true'>
    <xs:annotation>
      <xs:documentation>
        An abstract component type. This is a placeholder for all components
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Description' type='ComponentDescriptionType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The descriptive information about this component
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='Configuration' type='ComponentConfigurationType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The configuration information about this component
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='DataItems' type='DataItemsType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The component&apos;s Data Items
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='Components' type='ComponentsType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The sub components
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='Compositions' type='CompositionsType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            A list of composition elements
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='References' type='ReferencesType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            A list of references
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
    <xs:attribute name='id' type='IDType' use='required'/>
    <xs:attribute name='nativeName' type='NameType' use='optional'/>
    <xs:attribute name='sampleInterval' type='SampleIntervalType' use='optional'/>
    <xs:attribute name='sampleRate' type='DataItemSampleRateType' use='optional'/>
  </xs:complexType>
  <xs:element abstract='true' name='Component' type='ComponentType'>
    <xs:annotation>
      <xs:documentation>
        An abstract component type. This is a placeholder for all components
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ComponentDescriptionType' mixed='true'>
    <xs:annotation>
      <xs:documentation>
        The descriptive information. This can be manufacturer specific
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:any processContents='lax' minOccurs='0' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            The content of the description can text or XML elements
          </xs:documentation>
        </xs:annotation>
      </xs:any>
    </xs:sequence>
    <xs:attribute name='manufacturer' type='NameType' use='optional'/>
    <xs:attribute name='model' type='ModelType' use='optional'/>
    <xs:attribute name='serialNumber' type='SerialNumberType' use='optional'/>
    <xs:attribute name='station' type='StationType' use='optional'/>
  </xs:complexType>
  <xs:complexType name='AbstractConfigurationType' abstract='true'>
    <xs:annotation>
      <xs:documentation>
        Abstract configuration
      </xs:documentation>
    </xs:annotation>
  </xs:complexType>
  <xs:element abstract='true' name='AbstractConfiguration' type='AbstractConfigurationType'>
    <xs:annotation>
      <xs:documentation>
        Abstract configuration
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ComponentConfigurationType' mixed='true'>
    <xs:annotation>
      <xs:documentation>
        The configuration data associated with this component. For example,
        sensors may use 1451.5 or TEDS
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref='AbstractConfiguration' minOccurs='0' maxOccurs='1'/>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='CommonComponentType'>
    <xs:annotation>
      <xs:documentation>
        An abstract component that has an optional uuid
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='ComponentType'>
        <xs:attribute name='uuid' type='UuidType' use='optional'/>
        <xs:attribute name='name' type='NameType' use='optional'/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='CommonComponent' type='CommonComponentType' substitutionGroup='Component'>
    <xs:annotation>
      <xs:documentation>
        An abstract component that has an optional uuid
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ComponentsType'>
    <xs:annotation>
      <xs:documentation>
        A list of generic components
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element ref='Component' minOccurs='1' maxOccurs='unbounded'/>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='DeviceType'>
    <xs:annotation>
      <xs:documentation>
        The top level component managed by the agent
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='ComponentType'>
        <xs:attribute name='iso841Class' type='Iso841ClassType' use='optional'/>
        <xs:attribute name='uuid' type='UuidType' use='required'/>
        <xs:attribute name='name' type='NameType' use='required'/>
        <xs:attribute name='version' type='VersionType' use='optional'/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Device' type='DeviceType' substitutionGroup='Component'>
    <xs:annotation>
      <xs:documentation>
        The top level component managed by the agent
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ControllerType'>
    <xs:annotation>
      <xs:documentation>
        A controller
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Controller' type='ControllerType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A controller
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='PowerType'>
    <xs:annotation>
      <xs:documentation>
        DEPRECATED: A power measuring component
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Power' type='PowerType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        DEPRECATED: A power measuring component
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='SensorType'>
    <xs:annotation>
      <xs:documentation>
        A sensor, this is not abstract to allow for easy extensibility.
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Sensor' type='SensorType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A sensor, this is not abstract to allow for easy extensibility.
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='PathType'>
    <xs:annotation>
      <xs:documentation>
        A path component
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Path' type='PathType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A path component
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ActuatorType'>
    <xs:annotation>
      <xs:documentation>
        A component that causes motion
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Actuator' type='ActuatorType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A component that causes motion
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='DoorType'>
    <xs:annotation>
      <xs:documentation>
        A door on the machine
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Door' type='DoorType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A door on the machine
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='AuxiliariesType'>
    <xs:annotation>
      <xs:documentation>
        An XML container used to organize information for \gls{lower level}
        elements representing functional sub-systems that provide supplementary
        or extended capabilities for a piece of equipment, but they are not
        required for the basic operation of the equipment.
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Auxiliaries' type='AuxiliariesType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        An XML container used to organize information for \gls{lower level}
        elements representing functional sub-systems that provide supplementary
        or extended capabilities for a piece of equipment, but they are not
        required for the basic operation of the equipment.
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='LoaderType'>
    <xs:annotation>
      <xs:documentation>
        Loader is an XML container that represents the information for a unit
        comprised of all the parts involved in moving and distributing
        materials, parts, tooling, and other items to or from a piece of
        equipment.
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Loader' type='LoaderType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        Loader is an XML container that represents the information for a unit
        comprised of all the parts involved in moving and distributing
        materials, parts, tooling, and other items to or from a piece of
        equipment.
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='WasteDisposalType'>
    <xs:annotation>
      <xs:documentation>
        WasteDisposal is an XML container that represents the information for a
        unit comprised of all the parts involved in removing manufacturing
        byproducts from a piece of equipment.
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='WasteDisposal' type='WasteDisposalType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        WasteDisposal is an XML container that represents the information for a
        unit comprised of all the parts involved in removing manufacturing
        byproducts from a piece of equipment.
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ToolingDeliveryType'>
    <xs:annotation>
      <xs:documentation>
        ToolingDelivery is an XML container that represents the information for
        a unit involved in managing, positioning, storing, and delivering
        tooling within a piece of equipment
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='ToolingDelivery' type='ToolingDeliveryType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        ToolingDelivery is an XML container that represents the information for
        a unit involved in managing, positioning, storing, and delivering
        tooling within a piece of equipment
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='CompositionsType'>
    <xs:annotation>
      <xs:documentation>
        A collection of sub elements
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Composition' type='CompositionType' minOccurs='1' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            An assembly of a component
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:simpleType name='CompositionTypeExtType'>
    <xs:annotation>
      <xs:documentation>
        An extension point for Composition
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:pattern value='[a-ln-z]:[A-Z_0-9]+'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='CompositionEnumTypeEnum'>
    <xs:annotation>
      <xs:documentation>
        The vocab for the type of composition
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='ACTUATOR'/>
      <xs:enumeration value='AMPLIFIER'/>
      <xs:enumeration value='BALLSCREW'/>
      <xs:enumeration value='BATTERY'/>
      <xs:enumeration value='BELT'/>
      <xs:enumeration value='CIRCUIT_BREAKER'/>
      <xs:enumeration value='CHAIN'/>
      <xs:enumeration value='CHUCK'/>
      <xs:enumeration value='CHUTE'/>
      <xs:enumeration value='CLAMP'/>
      <xs:enumeration value='COMPRESSON'/>
      <xs:enumeration value='DOON'/>
      <xs:enumeration value='FAN'/>
      <xs:enumeration value='FILTER'/>
      <xs:enumeration value='GRIPPER'/>
      <xs:enumeration value='HOPPER'/>
      <xs:enumeration value='MOTOR'/>
      <xs:enumeration value='PUMP'/>
      <xs:enumeration value='POSITION_FEEDBACK'/>
      <xs:enumeration value='POWER_SUPPLY'/>
      <xs:enumeration value='SWITCH'/>
      <xs:enumeration value='TANK'/>
      <xs:enumeration value='TRANSFORMER'/>
      <xs:enumeration value='VALVE'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='CompositionEnumType'>
    <xs:annotation>
      <xs:documentation>
        The vocab for the type of composition
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes='CompositionEnumTypeEnum CompositionTypeExtType'/>
  </xs:simpleType>
  <xs:complexType name='CompositionType'>
    <xs:annotation>
      <xs:documentation>
        An abstract element
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Description' type='ComponentDescriptionType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The descriptive information about this sub element
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
    <xs:attribute name='id' type='IDType' use='required'/>
    <xs:attribute name='uuid' type='UuidType' use='optional'/>
    <xs:attribute name='name' type='NameType' use='optional'/>
    <xs:attribute name='type' type='CompositionEnumType' use='required'/>
  </xs:complexType>
  <xs:simpleType name='CalibrationDateType'>
    <xs:annotation>
      <xs:documentation>
        The time the calibration was preformed
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:date'/>
  </xs:simpleType>
  <xs:simpleType name='NextCalibrationDateType'>
    <xs:annotation>
      <xs:documentation>
        The time the next calibration should be preformed
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:date'/>
  </xs:simpleType>
  <xs:simpleType name='CalibrationInitialsType'>
    <xs:annotation>
      <xs:documentation>
        The initials of the person doing the calibration
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='FirmwareVersionType'>
    <xs:annotation>
      <xs:documentation>
        The firmware version of this sensor
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='ChannelNumberType'>
    <xs:annotation>
      <xs:documentation>
        The channel number
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:integer'/>
  </xs:simpleType>
  <xs:complexType name='SensorConfigurationType'>
    <xs:annotation>
      <xs:documentation>
        Calibration data for a sensor
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='AbstractConfigurationType'>
        <xs:sequence>
          <xs:element name='FirmwareVersion' type='FirmwareVersionType'>
            <xs:annotation>
              <xs:documentation>
                The firmware version
              </xs:documentation>
            </xs:annotation>
          </xs:element>
          <xs:element name='CalibrationDate' type='CalibrationDateType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                The date and time the sensor was calibrated
              </xs:documentation>
            </xs:annotation>
          </xs:element>
          <xs:element name='NextCalibrationDate' type='NextCalibrationDateType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                The date and time the sensor was calibrated
              </xs:documentation>
            </xs:annotation>
          </xs:element>
          <xs:element name='CalibrationInitials' type='CalibrationInitialsType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                The initials of the person who calibrated this sensor
              </xs:documentation>
            </xs:annotation>
          </xs:element>
          <xs:element name='Channels' type='ChannelsType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                The sensor channels
              </xs:documentation>
            </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='SensorConfiguration' type='SensorConfigurationType' substitutionGroup='AbstractConfiguration'>
    <xs:annotation>
      <xs:documentation>
        Calibration data for a sensor
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ChannelsType'>
    <xs:annotation>
      <xs:documentation>
        A collection of channel calibration data
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Channel' type='ChannelType' minOccurs='1' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            A calabration channel
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='ChannelType'>
    <xs:annotation>
      <xs:documentation>
        The calibration channel
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Description' type='DescriptionTextType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            A text description of the channel
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='CalibrationDate' type='CalibrationDateType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The date and time the sensor was calibrated
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='NextCalibrationDate' type='NextCalibrationDateType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The date and time the sensor was calibrated
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='CalibrationInitials' type='CalibrationInitialsType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The initials of the person who calibrated this sensor
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
    <xs:attribute name='number' type='ChannelNumberType' use='required'/>
    <xs:attribute name='name' type='NameType' use='optional'/>
  </xs:complexType>
  <xs:complexType name='AxesType'>
    <xs:annotation>
      <xs:documentation>
        A logical group of Axes representing a structural base
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Axes' type='AxesType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A logical group of Axes representing a structural base
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='AxisType' abstract='true'>
    <xs:annotation>
      <xs:documentation>
        A abstract machine axis
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element abstract='true' name='Axis' type='AxisType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A abstract machine axis
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='LinearType'>
    <xs:annotation>
      <xs:documentation>
        A linear axis
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='AxisType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Linear' type='LinearType' substitutionGroup='Axis'>
    <xs:annotation>
      <xs:documentation>
        A linear axis
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='RotaryType'>
    <xs:annotation>
      <xs:documentation>
        A rotary axis that moves in a rotational manor
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='AxisType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Rotary' type='RotaryType' substitutionGroup='Axis'>
    <xs:annotation>
      <xs:documentation>
        A rotary axis that moves in a rotational manor
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='SpindleType'>
    <xs:annotation>
      <xs:documentation>
        DEPRECATED: A spindle axis that spins
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='AxisType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Spindle' type='SpindleType' substitutionGroup='Axis'>
    <xs:annotation>
      <xs:documentation>
        DEPRECATED: A spindle axis that spins
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='SystemsType'>
    <xs:annotation>
      <xs:documentation>
        A grouping of all the systems of the device
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Systems' type='SystemsType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A grouping of all the systems of the device
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='SystemType'>
    <xs:annotation>
      <xs:documentation>
        A logical group of parts representing sub-system of the device
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='System' type='SystemType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A logical group of parts representing sub-system of the device
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='PneumaticType'>
    <xs:annotation>
      <xs:documentation>
        A component representing the pneumatic system
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='SystemType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Pneumatic' type='PneumaticType' substitutionGroup='System'>
    <xs:annotation>
      <xs:documentation>
        A component representing the pneumatic system
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='HydraulicType'>
    <xs:annotation>
      <xs:documentation>
        A component representing the hydraulic system
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='SystemType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Hydraulic' type='HydraulicType' substitutionGroup='System'>
    <xs:annotation>
      <xs:documentation>
        A component representing the hydraulic system
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='LubricationType'>
    <xs:annotation>
      <xs:documentation>
        A component representing the lubrication system
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='SystemType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Lubrication' type='LubricationType' substitutionGroup='System'>
    <xs:annotation>
      <xs:documentation>
        A component representing the lubrication system
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='CoolantType'>
    <xs:annotation>
      <xs:documentation>
        A component representing the coolant system
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='SystemType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Coolant' type='CoolantType' substitutionGroup='System'>
    <xs:annotation>
      <xs:documentation>
        A component representing the coolant system
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ElectricType'>
    <xs:annotation>
      <xs:documentation>
        A component representing the coolant system
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='SystemType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Electric' type='ElectricType' substitutionGroup='System'>
    <xs:annotation>
      <xs:documentation>
        A component representing the coolant system
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:simpleType name='SampleIntervalType'>
    <xs:annotation>
      <xs:documentation>
        The interval between adjacent sampleing of data
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:float'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemSampleRateType'>
    <xs:annotation>
      <xs:documentation>
        The frequency a measurement is sampled
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:float'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemOptionType'>
    <xs:annotation>
      <xs:documentation>
        The constrained value for this data item
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemValueType'>
    <xs:annotation>
      <xs:documentation>
        The constrained value for this data item
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'/>
  </xs:simpleType>
  <xs:simpleType name='DataItemNumericValueType'>
    <xs:annotation>
      <xs:documentation>
        The constrained value for this data item
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:float'/>
  </xs:simpleType>
  <xs:simpleType name='SourceComponentIdType'>
    <xs:annotation>
      <xs:documentation>
        An idref to the component id
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:IDREF'/>
  </xs:simpleType>
  <xs:simpleType name='SourceDataItemIdType'>
    <xs:annotation>
      <xs:documentation>
        An idref to the data item id
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:IDREF'/>
  </xs:simpleType>
  <xs:simpleType name='ComponentNameType'>
    <xs:annotation>
      <xs:documentation>
        The name of a related component
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:NMTOKEN'/>
  </xs:simpleType>
  <xs:simpleType name='FilterValueType'>
    <xs:annotation>
      <xs:documentation>
        The minimum limit on the change in a value
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:float'/>
  </xs:simpleType>
  <xs:simpleType name='CategoryType'>
    <xs:annotation>
      <xs:documentation>
        The measurement sampling type
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='EVENT'/>
      <xs:enumeration value='SAMPLE'/>
      <xs:enumeration value='CONDITION'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='NativeScaleType'>
    <xs:annotation>
      <xs:documentation>
        The multiplier for the native value. Conversion divides by this value
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:float'/>
  </xs:simpleType>
  <xs:simpleType name='RepresentationType'>
    <xs:annotation>
      <xs:documentation>
        The possible representations of a DataItem
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='VALUE'/>
      <xs:enumeration value='TIME_SERIES'/>
      <xs:enumeration value='DISCRETE'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='DataItemFilterEnumType'>
    <xs:annotation>
      <xs:documentation>
        The type of filter
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base='xs:string'>
      <xs:enumeration value='MINIMUM_DELTA'/>
      <xs:enumeration value='PERIOD'/>
    </xs:restriction>
  </xs:simpleType>
  <xs:complexType name='DataItemsType'>
    <xs:annotation>
      <xs:documentation>
        A generic list of measurements for all axis
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='DataItem' type='DataItemType' minOccurs='1' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            A measurement for this component
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='DataItemType'>
    <xs:annotation>
      <xs:documentation>
        A abstract measurement
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Source' type='DataItemSourceType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            Additional information about the component, channel, register,
            etc... that collects the data.
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='Constraints' type='DataItemConstraintsType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            Limits on the set of possible values
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='Filters' type='FiltersType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            Limits on the set of possible values
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='InitialValue' type='DataItemNumericValueType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The initial value for counters
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name='ResetTrigger' type='DataItemResetValueType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            The event that triggers the resetting of this counter
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
    <xs:attribute name='name' type='NameType' use='optional'/>
    <xs:attribute name='id' type='IDType' use='required'/>
    <xs:attribute name='type' type='DataItemEnumType' use='required'/>
    <xs:attribute name='subType' type='DataItemSubEnumType' use='optional'/>
    <xs:attribute name='statistic' type='DataItemStatisticsType' use='optional'/>
    <xs:attribute name='units' type='UnitsType' use='optional'/>
    <xs:attribute name='nativeUnits' type='NativeUnitsType' use='optional'/>
    <xs:attribute name='nativeScale' type='NativeScaleType' use='optional'/>
    <xs:attribute name='category' type='CategoryType' use='required'/>
    <xs:attribute name='coordinateSystem' type='CoordinateSystemType' use='optional'/>
    <xs:attribute name='compositionId' type='CompositionIdType' use='optional'/>
    <xs:attribute name='sampleRate' type='DataItemSampleRateType' use='optional'/>
    <xs:attribute name='representation' type='RepresentationType' use='optional' default='VALUE'/>
    <xs:attribute name='significantDigits' type='SignificantDigitsValueType' use='optional'/>
  </xs:complexType>
  <xs:complexType name='DataItemConstraintsType'>
    <xs:annotation>
      <xs:documentation>
        A set of limits for a data item
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:choice minOccurs='0' maxOccurs='1'>
        <xs:sequence minOccurs='1'>
          <xs:element name='Value' type='DataItemValueElementType' minOccurs='1' maxOccurs='unbounded'>
            <xs:annotation>
              <xs:documentation>
                A possible value for this data item. Used for controlled
                vocabularies.
              </xs:documentation>
            </xs:annotation>
          </xs:element>
        </xs:sequence>
        <xs:sequence minOccurs='1'>
          <xs:element name='Minimum' type='DataItemNumericValueType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                A minimum value for this data item.
              </xs:documentation>
            </xs:annotation>
          </xs:element>
          <xs:element name='Maximum' type='DataItemNumericValueType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                A maximum value for this data item.
              </xs:documentation>
            </xs:annotation>
          </xs:element>
          <xs:element name='Nominal' type='DataItemNumericValueType' minOccurs='0' maxOccurs='1'>
            <xs:annotation>
              <xs:documentation>
                A nominal value for this data item.
              </xs:documentation>
            </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:choice>
      <xs:element name='Filter' type='DataItemFilterType' minOccurs='0' maxOccurs='1'>
        <xs:annotation>
          <xs:documentation>
            DEPRECATED: A limit on the amount of data by specifying the minimal
            delta required.
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='FiltersType'>
    <xs:annotation>
      <xs:documentation>
        A set of filters
      </xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name='Filter' type='DataItemFilterType' minOccurs='1' maxOccurs='unbounded'>
        <xs:annotation>
          <xs:documentation>
            A limit on the amount of data by specifying the minimal delta
            required.
          </xs:documentation>
        </xs:annotation>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
  <xs:complexType name='DataItemBaseType'>
    <xs:annotation>
      <xs:documentation>
        A starting point for a data item
      </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base='DataItemValueType'/>
    </xs:simpleContent>
  </xs:complexType>
  <xs:complexType name='DataItemValueElementType'>
    <xs:annotation>
      <xs:documentation>
        The value element
      </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base='DataItemOptionType'/>
    </xs:simpleContent>
  </xs:complexType>
  <xs:complexType name='DataItemFilterType'>
    <xs:annotation>
      <xs:documentation>
        The filter for the data item
      </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base='FilterValueType'>
        <xs:attribute name='type' type='DataItemFilterEnumType' use='required'/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
  <xs:complexType name='DataItemSourceType'>
    <xs:annotation>
      <xs:documentation>
        A native data source
      </xs:documentation>
    </xs:annotation>
    <xs:simpleContent>
      <xs:extension base='ItemSourceType'>
        <xs:attribute name='dataItemId' type='SourceDataItemIdType' use='optional'/>
        <xs:attribute name='componentId' type='SourceComponentIdType' use='optional'/>
        <xs:attribute name='compositionId' type='CompositionIdType' use='optional'/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
  <xs:complexType name='InterfacesType'>
    <xs:annotation>
      <xs:documentation>
        A component representing all the interfaces in a device.
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='Interfaces' type='InterfacesType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A component representing all the interfaces in a device.
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='InterfaceType' abstract='true'>
    <xs:annotation>
      <xs:documentation>
        A component representing an interface in a device.
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='CommonComponentType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element abstract='true' name='Interface' type='InterfaceType' substitutionGroup='CommonComponent'>
    <xs:annotation>
      <xs:documentation>
        A component representing an interface in a device.
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='BarFeederInterfaceType'>
    <xs:annotation>
      <xs:documentation>
        An interface to a bar feeder device
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='InterfaceType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='BarFeederInterface' type='BarFeederInterfaceType' substitutionGroup='Interface'>
    <xs:annotation>
      <xs:documentation>
        An interface to a bar feeder device
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='MaterialHandlerInterfaceType'>
    <xs:annotation>
      <xs:documentation>
        An interface to a device that can load and unload material
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='InterfaceType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='MaterialHandlerInterface' type='MaterialHandlerInterfaceType' substitutionGroup='Interface'>
    <xs:annotation>
      <xs:documentation>
        An interface to a device that can load and unload material
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='DoorInterfaceType'>
    <xs:annotation>
      <xs:documentation>
        An interface to control a door
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='InterfaceType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='DoorInterface' type='DoorInterfaceType' substitutionGroup='Interface'>
    <xs:annotation>
      <xs:documentation>
        An interface to control a door
      </xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name='ChuckInterfaceType'>
    <xs:annotation>
      <xs:documentation>
        An interface to control a chuck
      </xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base='InterfaceType'/>
    </xs:complexContent>
  </xs:complexType>
  <xs:element name='ChuckInterface' type='ChuckInterfaceType' substitutionGroup='Interface'>
    <xs:annotation>
      <xs:documentation>
        An interface to control a chuck
      </xs:documentation>
    </xs:annotation>
  </xs:element>
</xs:schema>