Hi Kirk, That looks really snazzy. One thing to note is that the ModIO can work as a RS-232 to RS485 converter as well, so you can daisy chain other Modbus devices such as a VFD or more ModIOs, etc.
On the Engineering notes page is EN007 which depicts the jumper setting for utilising the ModIOs on-board RS232 to RS485 converter. http://homanndesigns.com/store/index.php?main_page=page&id=3&chapter=0 Note, that in this example the network is shown as a full duplex 4 wire Modbus network, but by putting in the full/half jumper a 2 wire 1/2 duplex network can be set up. Cheers, Peter. Kirk Wallace wrote: > On Sat, 2011-03-05 at 14:19 -0800, Kirk Wallace wrote: > ... snip >> The standard configuration seems to work, which provides 8 bits out, 8 >> bits in, 3 10-bit analogs in, 2 MPG in, LCD out (not tested yet). >> Currently, I am working on a pyVCP panel (similar to a DRO app) to >> handle the configuration registers. > > I just updated the ModIO wiki page: > http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ModIO > > Now that it is mostly working, I'll probably just use it for a while > before making more updates. > > One problem is that the component load can crash by sending a loop of > carriage returns. The only way to recover is to power off the PC and > start over. I think it has to do with the serial port not loading > completely, then crashes when by component takes over. Anyone have any > ideas? > > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > ------------------------------------------------------------------------------ > What You Don't Know About Data Connectivity CAN Hurt You > This paper provides an overview of data connectivity, details > its effect on application quality, and explores various alternative > solutions. http://p.sf.net/sfu/progress-d2d > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------- http://www.homanndesigns.com ------------------------------------------------------------------------------ What You Don't Know About Data Connectivity CAN Hurt You This paper provides an overview of data connectivity, details its effect on application quality, and explores various alternative solutions. http://p.sf.net/sfu/progress-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
