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--- mycnc:m6_tool_change_macro:m6_tool_change_macro [2018/04/05 10:36] – skirillov
+++ mycnc:m6_tool_change_macro:m6_tool_change_macro [2019/10/07 12:17] – ivan
@@ Line 74: / Line 74: @@
 N400 (The end label)
 </code>
+==== M06 Tool Change for Knife/Pen, with lift controlled through air pneumatics  ====
+The following changes can be made to the default M6 macro in order to eliminate lift at the beginning of the tool change through the machine going up/down, and instead turn on and off the outputs which will control the tool change:
+<code C M6>
+G10 L81 P101 Q5041
+G10 L81 P102 Q5042
+(M63 sets both ports 1 and 2 off - assigned ports for pen and knife respectively)
+M63P1
+M63P2
+G4 P1 (one second pause)
+(G90 G0 Z15)  (Lift To Safe height is commented out)
+(G53 G90 G0 Z[ #5433 - 0.5 ]) (Lift to the Top is commented out)
+(Whole turns removed)
+G10 L80 P7005 Q0 ()
+M212 (Move to C=0)
+G90 G10 L70 P#5220 C0 (Assign C=0 as work position)
+G90 G0 C0 (Double check C=0)
+N100
+if [ #5409 NE 2 ] 200
+(Tool 2 Knife)
+G10 L80 P7005 Q1 (turns on tangential knife programming)
+M63P1 (pen output is off)
+M62P2 (knife output is on)
+G4 P1 (one second pause)
+GOTO 2000
+N200
+if [ #5409 NE 4 ] 300
+(Tool 4 Pen)
+G10 L80 P7005 Q0 (turns off tangential knife programming)
+M63P2 (knife output is off)
+M62P1 (pen output is on)
+G4 P1 (one second pause)
+GOTO 2000
+N2000
+G10 L81 P5400 Q5409    (set current tool number)
+G4 P0.3 (Pause 0.3sec to update new Z correction in the controller)
+G90 G0 X#101 Y#102
+</code>
+In this example, Pen is assigned as tool 4, with output 1 controlling its movement up/down during the tool switch, and Knife is assigned as tool 2, with output 2 controlling its movement up/down (assuming some sort of pneumatic system is activated when output 1/2 are turned on/off). M62 is a Hardware PLC procedure which turns a select port ON, while M63 turns a select output OFF. Overall, it is still necessary to use the M6 procedure in addition to M62/63 for the selected outputs, as M6 allows to compensate for the offset between the different tools.
+Note that in order to prevent z-axis movement at the beginning of the program, it is also required to set the Lift Height to 0 during the DXF import.