Doriano Blengino a écrit : ... > I wrote in C, some time ago, an embedded application using modbus on RS-422. > It is not a difficult matter, at least the part I was interested in - my > device acted as a server, and a MMI (a touch screen LCD panel) was > attached to it.
Oops, my fault, I forgot to tell precisions: * It is in fact ModBus TCP, * I'll use it for a HA cluster that'll retrieve info from some concentrators (900 sensors dispatched on 4 concentrators) > If you are interested in, I can send some C source code and perhaps the > official documentation I used to write it (available for free in the > Internet). I don't remember if my implementation was "full" or had only > the relevant part, but it was simple and short enough to be translated > easily to gambas; there was only the CRC-32 (or whatever checksum) which > was a little CPU intensive, but I suppose an i386 computer has far more > power than a poor embedded microcontroller... Thanks Doriano, but I think I've found what I need: I already retrieve docs from modbus.org, and find OpenSCADA (written in C++) that seems to be ok to do the trick. I only need to make some tests, and asked the hardware installer to try to get a simulator from his supplier. JY -- You will think of something funnier than this to add to the fortunes. ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
