<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
	<!--IPC2546 General: Simple Types-->
	<xs:simpleType name="IMAGE_TYPE">
		<xs:restriction base="xs:string">
			<xs:enumeration value="LOCAL"/>
			<xs:enumeration value="GLOBAL"/>
		</xs:restriction>
	</xs:simpleType>
	<!--NestedElements from IPC2546 General-->
	<xs:element name="BadBoardMark">
		<xs:complexType>
			<xs:attribute name="imageId" type="xs:string" use="required"/>
			<xs:attribute name="designator" type="xs:string" use="optional"/>
			<xs:attribute name="imageType" type="IMAGE_TYPE" use="optional"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Fiducial">
		<xs:complexType>
			<xs:attribute name="designator" type="xs:string" use="required"/>
			<xs:attribute name="imageId" type="xs:string" use="optional"/>
			<xs:attribute name="imageType" type="IMAGE_TYPE" use="optional"/>
			<xs:attribute name="imageShape" type="xs:string" use="optional"/>
			<xs:attribute name="recognitionReference" type="xs:string" use="optional"/>
			<xs:attribute name="score" type="xs:positiveInteger" use="optional"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="MachineError">
		<xs:complexType>
			<xs:sequence>
				<xs:element ref="Subsystem"/>
			</xs:sequence>
			<xs:attribute name="vendorErrorCode" type="xs:string" use="optional"/>
			<xs:attribute name="description" type="xs:string" use="optional"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Subsystem">
		<xs:complexType>
			<xs:attribute name="subsystemType" type="xs:string" use="required"/>
			<xs:attribute name="subsystemId" type="xs:string" use="required"/>
			<xs:attribute name="revision" type="xs:string" use="optional"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="EnvironmentalControlUnit">
		<xs:complexType>
			<xs:attribute name="name" type="xs:string" use="required"/>
			<xs:attribute name="units" use="required">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:enumeration value="KELVIN"/>
						<xs:enumeration value="CELSIUS"/>
						<xs:enumeration value="FAHRENHEIT"/>
						<xs:enumeration value="RELATIVE_HUMIDITY"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
			<xs:attribute name="setPoint" type="xs:double" use="required"/>
			<xs:attribute name="actualValue" type="xs:double" use="optional"/>
			<xs:attribute name="zoneType" use="optional">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:enumeration value="CONVECTIONHEAT"/>
						<xs:enumeration value="CONDUCTIONHEAT"/>
						<xs:enumeration value="INFAREDRADIATIONHEAT"/>
						<xs:enumeration value="COOLING"/>
						<xs:enumeration value="HUMIDIFIER"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
			<xs:attribute name="blowerSpeedRPM" type="xs:nonNegativeInteger" use="optional"/>
			<xs:attribute name="blowerSpeedRate" use="optional">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:enumeration value="LOW"/>
						<xs:enumeration value="MEDLOW"/>
						<xs:enumeration value="MED"/>
						<xs:enumeration value="MEDHIGH"/>
						<xs:enumeration value="HIGH"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
		</xs:complexType>
	</xs:element>
	<xs:element name="ItemData">
		<xs:complexType>
			<xs:attribute name="itemMultiplier" type="xs:nonNegativeInteger" use="optional"/>
			<xs:attribute name="units" use="optional">
				<xs:simpleType>
					<xs:restriction base="xs:string">
						<xs:enumeration value="METER"/>
						<xs:enumeration value="INCH"/>
					</xs:restriction>
				</xs:simpleType>
			</xs:attribute>
			<xs:attribute name="itemLength" type="xs:double" use="optional"/>
			<xs:attribute name="itemWidth" type="xs:double" use="optional"/>
		</xs:complexType>
	</xs:element>
	<xs:element name="Extensions">
		<xs:complexType>
			<xs:sequence>
				<xs:any minOccurs="0" maxOccurs="unbounded"/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
</xs:schema>

