printer.cfg modified - 04.10.2026 - 00:54:00

printer_data/config/printer.cfg

@@ -699,16 +699,25 @@ description: Abort before printing when the mesh looks like it scanned a plate e
 # rest was within +/-0.05 mm). A flat Voron bed stays well below this range.
 variable_max_range: 0.35
 gcode:
-    {% set matrix = printer.bed_mesh.probed_matrix %}
-    {% set values = matrix | sum(start=[]) %}
-    {% if values|length == 0 %}
-        { action_raise_error("_CHECK_MESH: no mesh is loaded") }
-    {% elif (values|max) - (values|min) > max_range %}
-        { action_raise_error("_CHECK_MESH: mesh range %.3f mm (min %.3f, max %.3f) exceeds %.2f mm; the scan probably crossed a plate edge. Check plate position or mesh_min/mesh_max." % ((values|max) - (values|min), values|min, values|max, max_range)) }
+    {% set values = printer.bed_mesh.probed_matrix | sum(start=[]) %}
+    {% set range = (values|max) - (values|min) if values else 0 %}
+    {% if not values or range > max_range %}
+        {% if values %}
+            { action_respond_info("_CHECK_MESH: mesh range %.3f mm (min %.3f, max %.3f) exceeds %.2f mm; the scan probably crossed a plate edge. Check plate position or mesh_min/mesh_max." % (range, values|min, values|max, max_range)) }
+        {% else %}
+            { action_respond_info("_CHECK_MESH: no mesh is loaded") }
+        {% endif %}
+        # Heaters off first; the error then stops PRINT_START and the job.
+        _PRINT_CLEANUP
+        _CHECK_MESH_ABORT
     {% else %}
-        { action_respond_info("_CHECK_MESH: mesh range %.3f mm OK" % ((values|max) - (values|min))) }
+        { action_respond_info("_CHECK_MESH: mesh range %.3f mm OK" % range) }
     {% endif %}
 
+[gcode_macro _CHECK_MESH_ABORT]
+gcode:
+    { action_raise_error("Print aborted by _CHECK_MESH, see the message above") }
+
 [gcode_macro CARTOGRAPHER_MESH]
 description: Adaptive scan with a safe full-mesh fallback for unreachable edge-only objects
 gcode: