On 03/29/2017 08:43 AM, Jon Elson wrote: > On 03/28/2017 12:27 PM, Stuart Stevenson wrote: >> Gentlemen, >> Setup at Helix (my shop) >> Wheezy >> Linuxcnc2.7 - git pull and compile this morning >> PPMC interface >> Jog Wheel - Fanuc type A60-0201-5001 - 100 detents per wheel revolution > John Kasunich gave out some old Fanuc MPGs at a code fest > quite some years ago. There are two pots inside the back > that set the level for the two photosensors. I had to turn > mine all the way up to get reliable signals out of them. I > think the LED in the encoder had faded. It was obvious when > checking the A and B outputs that they were "spotty" and > very far from 50% pulse width. So, you ought to check the A > and B outputs. > > The PPMC encoder card, when in single-ended input mode, has > a logic threshold of 2.5 V. If the encoder output has weak > pull-up, it might be helpful to put a 1K Ohm pull-up > resistor to +5V on the A and B lines.
I don't know if these are similar: > http://www.wallacecompany.com/machine_shop/fanuc_mpg/fanuc_mpg_index.html I got what I thought was a good deal on three of these. One had very little detent pressure so I tried to fix it. It looks like there are a lot of these at a decent price if one shops around a bit. Watch out for shipping cost though. These have large wheels, or what I consider normal. http://www.ebay.com/itm/171287795365 http://www.ebay.com/itm/151583672829 -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
