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--- mycnc:flatbed_correction [2019/07/08 12:04] – ivan
+++ mycnc:flatbed_correction [2019/12/20 12:01] – ivan
@@ Line 28: / Line 28: @@
 By adding these correction points, myCNC software will use triangulation in order to create a complete updated map of the working table. From here on, whenever Flatbed Correction is enabled, the machine will automatically adjust the z-axis height of the working tool in order to adjust for the table level changes depending on where in the XY-plane it currently is.
+====M402 macro====
+The code for the M402 macro can be found below:
+<code>
+(Surface measure macro)
+G28.2 Z0 (save current Z into Register1.Z)
+M89 L1 P8 (watch for input(P) to be closed (L1) - EDIT THIS)
+G91 G0 Z -35.000 F 400.0
+(move down, stop if sensor triggered)
+G91 G0 Z 2.000 F 800.0
+M89 L1 P8 (watch for input(P) to be closed (L1) - EDIT THIS)
+G91 G0 Z -2.000 F 20.0
+G4 P0.2
+G90 G10 L81 P8171 Q5021
+G90 G10 L81 P8172 Q5022
+G90 G10 L81 P8173 Q5023
+G90 G10 L80 P8170 Q1
+G91 G0 Z10
+</code>
+Here, you have to edit the two lines with the EDIT THIS comments. In the input P, you have to specify the input number for the sensor (set as 8 in this example), and in the L field you have to specify the behaviour that will be interpreted as the sensor being triggered (0 for a normally closed sensor which will be opened when triggered, and 1 for a normally open sensor which will be closed at contact).