On Wed, 2008-06-25 at 20:50 -0700, [EMAIL PROTECTED] wrote: > I need to use a 16 tool changer (it has no encoder it counts the how > many times the index motor rotates) > > so whatever method of getting the infromation about the tool number > requested by EMC to my > > PLC I can deal with it. > > Thanks > > Terry
That sounds just like my QuickDraw changer here: http://www.wallacecompany.com/machine_shop/Shizuoka/00029-1a.jpg http://www.wallacecompany.com/machine_shop/Shizuoka/00030-1a.jpg http://www.wallacecompany.com/machine_shop/Shizuoka/tool_changer_video.html My changer has inputs for Home, CW and CCW Rotation, Tool-In and Tool-Out. It has an output pulse for Command Completed. The output pulse activates when a Home, Tool-In and Tool-Out completes or pulses for each tool move. If your changer is like mine, EMC and an input on your 5i20 could count the tool pulses while a tool move was in progress. Once the number of pulses is counted, you could hold that number for the next carousel move. You could also route that signal to another part of EMC for the command complete, but it would only be active for the other commands. A 5i20 output would be needed for each changer command. This would not use your PLC. I believe all the EMC HAL components you would need are already available, like Counter or UpDown , And, Or, Debounce, etc. What PLC do you have? EMC should be able to output what ever you need. I would guess five 5i20 outputs for your binary; ones, twos, fours, eights and sixteens bit. A small HAL component would be needed to set these bits unless someone has come up with a component already. I wonder if your PLC could use serial data (ModBus?)? You could bit bang the data out two pins like my SPI(ish) serial DAC component: http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/serial_dac.comp -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC/EMC CNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/EMC CNC) ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
