Mark, Not sure if this helps or not. But for various control systems I use Moxa device servers for Ethernet to RS232/422/485. I talk to them over TCP/IP, but it can give you a simple telnet port to the device on the other end.
http://www.moxa.com/Serial_Connectivity/Index.aspx Wesley ----- Original Message ----- > From: "Mark Johnsen" <m...@ijohnsen.com> > To: "Enhanced Machine Controller" <emc-users@lists.sourceforge.net> > Sent: Wednesday, April 1, 2015 12:05:54 PM > Subject: [Emc-users] Modbus RS-485 Connection with Mesa? > I'm looking at controlling a X-Z gantry system w/ LinuxCNC (well really HAL > and some code). Operator pushes a button and the gantry moves between two > baths, waiting for pre-set seconds per bath. The positions are set and do > not change. > > I was thinking of using a Mesa 5i25-7i76 combo and maybe a 7i32 1.5/3Amp or > another off-the-shelf stepper driver. There's no-magic needed for this. I > need some I/O for limits, home, inputs, outputs, etc. I realize the 7i76 > is overkill for axis count, but I might want to expand to 4 axes later. > > I would take one of the GUI interfaces (touchy or axis, etc) and make my > own suitable interface (easier said than done, possibly). > > The bath has a Love temp controller (16A2133-996) that can communicate > Modbus RS-485. The 7i76 has RS-422 serial and the PC would have a RS-232 > port. What's the best way to get to RS-485? I could use a RS-232 to > RS-485 converter like this one from advantech: > http://www.mouser.com/ProductDetail/Advantech/ADAM-4561-CE/?qs=%2fha2pyFaduhMyuR96x%252bdp4DnBDFhtESzKcpNyIUxvYPu1PngEfDtkA%3d%3d > > I thought maybe someone would have a suggestion? Might the mesa smart > serial RS-422 be able to work someway? > > Regards, > Mark > > PS. Considering my monitor turning off issues (previous posts), I'm second > guessing using LinuxCNC/hal for this, but I'm a glutton for punishment.. > You just can't beat the price/feature linuxCNC. > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming The Go Parallel Website, sponsored > by Intel and developed in partnership with Slashdot Media, is your hub for all > things parallel software development, from weekly thought leadership blogs to > news, videos, case studies, tutorials and more. Take a look and join the > conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
