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FMTC open sources EtherCAT master library开发组件

water  发表于 2008/8/16 7:41:54      81205 查看 475 回复  [上一主题]  [下一主题]

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The Flanders Mechatronics Technology Centre has decided to release
　　their EtherCAT master implementation as open source software. The
　　EtherCAT master library, together with its technical documentation can
　　be obtained from http://ethercatmaster.berlios.de. Technical discussions
　　and patches are welcomed on the mailing list, accessible from the same
　　website.
　　“When we started our investigation of Ethernet fieldbus systems two
　　years ago, EtherCAT was still an upcoming technology”, explains Bob
　　Koninckx, program manager at FMTC. “We saw, however, great potential
　　for Motion Control applications. Also the possibility to use CANopen as
　　the application layer, allowing for an easy upgrade of existing CAN-based
　　applications was much appreciated”, he continues.
　　FMTC member companies are machine builders, active in very specialized
　　markets, like textile, sheet metal working, agriculture etc. Often they build
　　their own control solution, simply because they can not find solutions that
　　meet their needs on the market. A fieldbus, regardless of its technical
　　merits, that can not be easily integrated with their in-house developed
　　controllers, will therefore never be interesting to them. “In order to
　　assess the usefulness of EtherCAT for our member companies, we were
　　more or less obliged to make our own implementation”, Bob Koninckx
　　says.
　　“We were pleased that our steering committee agreed with the above
　　ideas and allowed us to release our EtherCAT master implementation as
　　open source software at the end of the project. Also the support we got
　　from the EtherCAT Technology Group was much appreciated”, he adds.
　　In his opinion, this was one of the strongest arguments they could possibly
　　make to prove that EtherCAT indeed is an open technology.
　　Martin Rostan, Executive Director of the EtherCAT Technology Group:
　　“The FMTC open source EtherCAT master library is a most welcome
　　enhancement to the EtherCAT technology offering. It provides EtherCAT
　　
　　connectivity to the open source community and will contribute to the
　　success story of our high performance Ethernet- based fieldbus system.
　　The concerns that open source projects might dilute conformance with
　　the standard were met by careful additions to the GNU public license:
　　code developed in this project has to remain compatible with the
　　EtherCAT specs and a valid EtherCAT implementation.”
　　“The software has been written for and has been tested with the eCos
　　operating system (http://ecos.sourceware.org)”, explains Klaas Gadeyne,
　　FMTC’s lead developer of the library. “It has however been written with
　　portability in mind. We did our best to limit the dependencies on the
　　operating system to a bare minimum and localized them in only a few files.
　　Porting to another operating requires as little as 700 lines of source code
　　to be inspected and possibly modified”, he continues.
　　“I think we provided something useful”, Bob Koninckx concludes. “The
　　sources are now available. I really hope that the project will pick up and
　　that people will start using them, improving them, porting them and
　　contribute their modifications.”
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