{"issue":{"created_at":"2011-12-02T10:20:53Z","state":"open","updated_at":"2011-12-02T11:37:00Z","comments":3,"user":{"gravatar_id":"11317d03d2ee678232308e341aebd8c7","id":392164,"url":"https://api.github.com/users/justjoheinz","avatar_url":"https://secure.gravatar.com/avatar/11317d03d2ee678232308e341aebd8c7?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","login":"justjoheinz"},"body":"This might actually be a bug of pronterface as well, I am not sure:\r\n\r\nI have the firmware configured to do Homing on the Z Axis and aim for the Max Endstop.\r\nIn pronterface I press the \"Z-Home\" button. Axis moves up, reaches the endstop, goes down a bit and slowly reaches the endstop again. This is fine.\r\nM114 reports:\r\nSENDING:M114\r\nX:0.00Y:0.00Z:0.00E:0.00 Count X:0.00Y:0.00Z:210.00\r\n(Note, I have not set the correct Axis lengths yet, hence 210 on a Cupcake!)\r\n\r\nNow, when I press the Move down -1mm button on pronterface the axis keeps moving down and down and down. I have to disconnect and reconnect to abort the move.","assignee":null,"labels":[],"id":2425791,"pull_request":{"patch_url":null,"html_url":null,"diff_url":null},"number":25,"title":"[Marlin_v1] Strange behaviour after homing","closed_at":null,"html_url":"https://github.com/ErikZalm/Marlin/issues/25","url":"https://api.github.com/repos/ErikZalm/Marlin/issues/25","milestone":null},"action":"created","comment":{"created_at":"2011-12-02T11:37:00Z","updated_at":"2011-12-02T11:37:00Z","user":{"gravatar_id":"94cca85e2691daba7f286da542218ccd","id":865201,"url":"https://api.github.com/users/bkubicek","avatar_url":"https://secure.gravatar.com/avatar/94cca85e2691daba7f286da542218ccd?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png","login":"bkubicek"},"body":"ok. Z_MAX is usually an endstop at the highest possible z-value, while z_min is the endstop that is typically triggered at z=0. \r\nA triggered Z_MAX should inhibit you from increasing the z-value, and allow you to go backwards towards Z_MIN by decreasing z values. Which actually partially fits to your description. \r\nIs it possible that you have a incorrect config where Z_MAX is used instead of Z_MIN?","id":2989054,"url":"https://api.github.com/repos/ErikZalm/Marlin/issues/comments/2989054"}}