--- a/plcopen/TC6_XML_V10_B.xsd	Thu Jun 21 10:23:26 2007 +0200
+++ b/plcopen/TC6_XML_V10_B.xsd	Mon Jun 25 18:57:14 2007 +0200
@@ -263,7 +263,7 @@
 																		</xsd:sequence>
 																		<xsd:attribute name="name" type="xsd:string" use="required"/>
 																		<xsd:attribute name="single" type="xsd:string" use="optional"/>
-																		<xsd:attribute name="interval" type="xsd:string" use="optional"/>
+																		<xsd:attribute name="interval" type="xsd:time" use="optional"/>
 																		<xsd:attribute name="priority" use="required">
 																			<xsd:simpleType>
 																				<xsd:restriction base="xsd:integer">