TPA = Target Point Alignment You will most Likely want to use 1 input per TPA switch.
On the over travel or limit switch. We have a few options. In series with the e-stop. Or just in series with the drive enable for each axis. Thanks, Billy On Feb 13, 2013, at 12:33 PM, Pete Matos <[email protected]> wrote: > Okay guys a breakthru,.... > I just managed to take a book lunch and sat down with the parts manual > for the Cincinatti arrow 500 I have. Therein it contains all of the wiring > diagrams and the harness setups. Well I looked at the table wiring harness > and sure enough there are basically four switches on the table. One is an > overtravel switch as they call it and one is labeled TPA switch. I am > gonna take that as one being a limit switch that presumably is used to hit > a cam on either end of travel and the other is a homing switch. That makes > this real simple then. I suppose I will be best off to then take the Limits > all three of them and tie them into the e-stop circuit and then use the > other switches for homing. That way I can have my cake and eat it too. The > homing is a puzzler now tho. I am sure I can wire it into my 7I77 mesa card > and get the switches recognized but the wiring of the switches is a > question mark. Not being too familiar with LinuxCNC does it have a HOME ALL > button where the actuation is followed by a slow homing of the Z axis, then > the X and then the Y etc... Does it allow for tripping the home switch and > then back off so one could maybe wire the home switches in series to the > mesa card only using one pin input? Or does it get more involved needing > all three home switches on different pins to allow the machine to home > properly? The original machine setup required you to home all three axes > and then manually home the toolchanger to position one and then it was > ready to run so I am thinking something like that would work fine. Honestly > if it is not too much trouble I may actually install a toolchanger home > position switch so it can just run home that way as well altho this machine > has a multi-directional 21 tool carousel on it. At this point the > toolchanger logic is gonna be left out of the picture until I have all > three axes working reliably and the spindle working as well. The machine > has a funky triple sensor setup on the spindle body that acts against some > kinda cam that used to be used to locate toolchange spindle alignment. I am > leaning towards using an encoder on the spindle body to locate that on the > new setup due to the LinuxCNC's use of it in rigid tapping operations. From > what I gather using an encoder on a standard VFD to power the spindle has > some issues, you must be at a slower speed to reliably be able to index the > spindle apparently. I have no problem with that if there is a way to > automatically slow the spindle to a crawl to index for the toolchange. That > is another problem for another time tho right now I would like to hear more > about the estop circuit and the limits/homes. thanks guys...peace > > Pete > > > > On Wed, Feb 13, 2013 at 12:01 PM, Gene Heskett <[email protected]> wrote: > >> On Wednesday 13 February 2013 12:00:38 Pete Matos did opine: >> >>> you guys crack me up!! ;<) peace >>> >>> Pete >>> >> >> Glad to be of service Pete. :) >> >> Cheers, Gene >> -- >> "There are four boxes to be used in defense of liberty: >> soap, ballot, jury, and ammo. Please use in that order." >> -Ed Howdershelt (Author) >> My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! >> My views >> <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> >> "Send lawyers, guns and money..." >> -- Lyrics from a Warren Zevon song >> I was taught to respect my elders, but its getting >> harder and harder to find any... >> >> >> ---------------------------------------------------------------------------- -- >> Free Next-Gen Firewall Hardware Offer >> Buy your Sophos next-gen firewall before the end March 2013 >> and get the hardware for free! Learn more. >> http://p.sf.net/sfu/sophos-d2d-feb >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ---------------------------------------------------------------------------- -- > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 > and get the hardware for free! Learn more. > http://p.sf.net/sfu/sophos-d2d-feb > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
