NOZZLE_TO_PROBE_OFFSET_Z_POSITIVE

Allow a positive value for z offset from nozzle to probe.
MarlinFirmware · Dec 1, 2020 · 9702170 · 9702170
1 parent 0d080ce
commit 9702170
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Showing 2 changed files with 11 additions and 5 deletions.
diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
@@ -957,6 +957,7 @@
  * - Use a caliper or ruler to measure the distance from the tip of
  *   the Nozzle to the center-point of the Probe in the X and Y axes.
  * - For the Z offset use your best known value and adjust at runtime.
+ *   For most Probes Z offset has a negative value! (Exeptions: CR-6 SE, FLSUN, Kossel, ZYYX)
  * - Probe Offsets can be tuned at runtime with 'M851', LCD menus, babystepping, etc.
  *
  * Assuming the typical work area orientation:
@@ -983,6 +984,9 @@
  */
 #define NOZZLE_TO_PROBE_OFFSET { 10, 10, 0 }
 
+// Only enable this option, if you have a special probe that triggers above the nozzle.
+//#define NOZZLE_TO_PROBE_OFFSET_Z_POSITIVE
+
 // Most probes should stay away from the edges of the bed, but
 // with NOZZLE_AS_PROBE this can be negative for a wider probing area.
 #define PROBING_MARGIN 10

diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
@@ -1357,11 +1357,13 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
     static_assert(sanity_nozzle_to_probe_offset.x == 0 && sanity_nozzle_to_probe_offset.y == 0,
                   "NOZZLE_AS_PROBE requires the XY offsets in NOZZLE_TO_PROBE_OFFSET to both be 0.");
   #else
-    static_assert(sanity_nozzle_to_probe_offset.z <= 0.25,
-                  "Are you sure your Probe triggers above the nozzle? Set a negative Z value in the NOZZLE_TO_PROBE_OFFSET.");
-    #ifdef PROBE_OFFSET_WIZARD_START_Z
-      static_assert(PROBE_OFFSET_WIZARD_START_Z <= 0.25,
-                    "Are you sure your Probe triggers above the nozzle? Set a negative value for PROBE_OFFSET_WIZARD_START_Z.");
+    #ifndef NOZZLE_TO_PROBE_OFFSET_Z_POSITIVE
+      static_assert(sanity_nozzle_to_probe_offset.z <= 0.0,
+                    "Are you sure your Probe triggers above the nozzle? Set a negative Z value in the NOZZLE_TO_PROBE_OFFSET or enable NOZZLE_TO_PROBE_OFFSET_Z_POSITIVE.");
+      #ifdef PROBE_OFFSET_WIZARD_START_Z
+        static_assert(PROBE_OFFSET_WIZARD_START_Z <= 0.0,
+                      "Are you sure your Probe triggers above the nozzle? Set a negative value for PROBE_OFFSET_WIZARD_START_Z enable NOZZLE_TO_PROBE_OFFSET_Z_POSITIVE.");
+      #endif
     #endif
     static_assert(PROBING_MARGIN       >= 0, "PROBING_MARGIN must be >= 0.");
     static_assert(PROBING_MARGIN_BACK  >= 0, "PROBING_MARGIN_BACK must be >= 0.");