So which version do you need? I've made my own revision 2 driver. > -----Original Message----- > From: Kirk Wallace [mailto:kwall...@wallacecompany.com] > Sent: Friday, 3 February 2012 2:51 PM > To: LinuxCNC Users List > Subject: [Emc-users] SJ200 VFD and Modbus > > I'm trying to get my SJ200 VFD connected with Modbus. In preparation for > this I ported a MVX9000 which I had on the shelf. It turned out to be a slam > dunk, almost. > http://www.wallacecompany.com/machine_shop/EMC2/mvx9000/ > > The SJ200 is a different story. It turns out Hitachi made a rev. 1 and 2 of the > hardware, and the register addresses are different. I only found the rev. 1 > manuals on-line, but fortunately had a paper manual, that I finally found, > which indicated what the problem was. > > Plus, there is conflicting information in the application notes about the > resister addresses being offsets from the register type base address. For > holding registers, it appears to be 40001. In practice thogh, the Modbus > query uses only the offset and the query type, read holding register in this > case, and the absolute address is handled inside the VFD. > > I am able to modpoll the proper registers now, but I have a problem with > reading more than two holding registers in my component. It looks like I'll > need to get into the bowels of libmodbus, unless someone here has dealt > with this problem and can provide some advise. Thanks. > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > ---------------------------------------------------------------------------- -- > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users
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