From d421f5250d7dad41bc090aa09a2dca72c20ca1e6 Mon Sep 17 00:00:00 2001
From: AnHardt <github@kitelab.de>
Date: Mon, 6 Jul 2015 19:55:34 +0200
Subject: [PATCH] Correct the sign of zprobe_zoffset for G29 (PR#@391)
Sign flipped with #2167.
See also comments
https://github.com/MarlinFirmware/Marlin/issues/2040#issuecomment-118568355
and following.
---
Marlin/Marlin_main.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index f42f5b0a28..eb33589d94 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -2835,8 +2835,8 @@ inline void gcode_G28() {
real_z = (float)st_get_position(Z_AXIS) / axis_steps_per_unit[Z_AXIS]; //get the real Z (since the auto bed leveling is already correcting the plane)
apply_rotation_xyz(plan_bed_level_matrix, x_tmp, y_tmp, z_tmp); // Apply the correction sending the probe offset
- //line below controls z probe offset, zprobe_zoffset is the actual offset that can be modified via m851
- current_position[Z_AXIS] = z_tmp - real_z + zprobe_zoffset; // The difference is added to current position and sent to planner.
+ //line below controls z probe offset, zprobe_zoffset is the actual offset that can be modified via m851 or is read from EEPROM
+ current_position[Z_AXIS] = z_tmp - real_z - zprobe_zoffset; // The difference is added to current position and sent to planner.
sync_plan_position();
}
#endif // !DELTA
--
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