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--- mycnc:mql [2020/02/20 12:49] – ivan
+++ mycnc:mql [2020/02/20 13:43] – ivan
@@ Line 5: / Line 5: @@
 myCNC software allows the user to implement MQL, or Minimum Quantity Lubrication, on their machines.
-MQL is a process in which tiny drops of high-quality aerosol lubricant are sprayed over the cutting tool and the material, providing lubrication at extremely low rates of lubricant use. This allows for a greatly reduced fluid usage (with the workpiece being nearly dry throughout the lubrication process) as opposed to typical flood coolants, resulting in a greener environmental impact and eliminating the need for coolant fluid disposal.
+MQL is a process in which tiny drops of high-quality aerosol lubricant are sprayed over the cutting tool and the material, providing lubrication at extremely low rates of lubricant use. This allows for a greatly reduced fluid usage (with the workpiece being nearly dry throughout the lubrication process) as opposed to typical flood setups, resulting in a greener environmental impact and eliminating the need for fluid disposal.
 MQL is available in myCNC software by going into the Step/Dir Coolant control tab within User Settings, where you can set the coolant rate.
@@ Line 13: / Line 13: @@
 The fine-tuning is done through the built-in PLC procedures, with the setup described in detail in the [[mycnc:independent_pulse_generator|Independent Pulse Generator]] manual.
+====MQL Setup in myCNC software====
+<code>This section has been copied from the Independent Pulse Generator manual linked above.</code>
+=== Pulse Generator settings in the Software PLC ===
+The rate, ratio and acceleration can be set up in the Software PLC, as well as in the User Settings widget (the Step-Dir Coolant Control section).
+"HANDLER_INIT.plc" procedure is started just after the configuration is sent to the myCNC controller. A few lines to set up the Frequency generator can be added there.
+++++ Show HANDLER_INIT code |
+<code C HANDLER_INIT.plc>
+main()
+ {
+ gvarset(60000,1);//run Servo ON procedure
+ gvarset(8131, 8000); //set Frequency acceleration
+ gvarset(8132, 1359); //set Ratio
+ gvarset(8133, 0);    //Off the Generator.
+ exit(99);
+};
+</code>
+++++
+=== Pulse Generator settings in Hardware PLC ===
+Function ''coolant_motor_start()'' is added to the ''mill-func.h'' file:
+++++ Show mill-func.h code |
+<code C mill-func.h>
+coolant_motor_start()
+{
+  timer=10;do{timer--;}while(timer>0);
+  gvarset(8131,1000000); //acceleration
+  timer=10;do{timer--;}while(timer>0);
+  x=gvarget(8133);//get the speed (frequency)
+  k=gvarget(8132);//get the ratio
+  x=x*k; //calculate the RAW frequency
+  gvarset(8130,x); //send the raw frequency to the register
+  timer=30;do{timer--;}while(timer>0); //wait a time for the frequency value to be delivered
+};
+</code>
+++++
+''M08.plc'' procedure which starts the coolant motor would be the following (//note the inclusion of mill-func.h at the beginning of the code//):
+++++ Show M08 code |
+<code C M08.plc>
+#include pins.h
+#include mill-func.h
+main()
+{
+  gvarset(7372,1);
+  portset(OUTPUT_FLOOD); //
+  coolant_motor_start();
+  exit(99);	//normal exit
+};
+</code>
+++++
+A procedure ''M09.plc'' to stop a coolant motor is simpler - we simply need to write "0" to the raw frequency register.
+++++ Show M09 code |
+<code C M09.plc>
+#include pins.h
+main()
+{
+  gvarset(7373,0);
+  gvarset(7372,0);
+  portclr(OUTPUT_FLOOD);
+  portclr(OUTPUT_MIST);
+  gvarset(8130,0); //stop the pulse generator
+  timer=30;do{timer--;}while(timer>0); //wait a time for the frequency value to be delivered
+  exit(99);	//normal exit
+};
+</code>
+++++
+This concludes the software setup for MQL within the myCNC software.