The AutomationML libraries that mirror the types defined in the OPC UA Namespace http://opcfoundation.org/UA/Safety/ are provided in a single digitally signed AML Container here:

http://www.opcfoundation.org/UA/schemas/Opc.Ua.Safety.NodeSet2.xml.amlx

NOTE The location referred to in this URL does not exist yet. The server location will be created after the RC member review, and this note will be deleted.