[1]ISO 146491. Data model for computerized numerical controllers: Part 1 overview and fundamental principles[S].Geneva, Switzerland:ISO TC 184/SCI,2003.
[2]ISO/DIS 10303238. Industrial automation systems and integration-product data representation and exchange-Part 238: application protocols: application interpreted model for computerized numerical controllers[S].Geneva, Switzerland:ISO TC 184/SC4,2004.