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Merge pull request #3089 from thinkyhead/rc_apply_2924

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Correct raise_z_for_servo for Z offsets below the nozzle
This commit is contained in:
Scott Lahteine 2016-03-05 20:23:14 -08:00
commit aa0b0483f4
1 changed files with 3 additions and 1 deletions
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4
Marlin/Marlin_main.cpp
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@ -1751,7 +1751,9 @@ static void setup_for_endstop_move() {
void raise_z_for_servo() {
float zpos = current_position[Z_AXIS], z_dest = Z_RAISE_BEFORE_PROBING;
z_dest += axis_known_position[Z_AXIS] ? zprobe_zoffset : zpos;
// The zprobe_zoffset is negative any switch below the nozzle, so
// multiply by Z_HOME_DIR (-1) to move enough away from bed for the probe
z_dest += axis_known_position[Z_AXIS] ? zprobe_zoffset * Z_HOME_DIR : zpos;
if (zpos < z_dest) do_blocking_move_to_z(z_dest); // also updates current_position
}