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--- mycnc:independent_pulse_generator [2018/09/02 10:08] – skirillov
+++ mycnc:independent_pulse_generator [2018/09/02 11:05] – skirillov
@@ Line 3: / Line 3: @@
 myCNC controllers Axis B can be switched to independent pulse generator output.
+<code>
+Independent Pulse Generator was added to firmware dated July 20, 2018.
+At the moment the firmware is available as the
+"Testing" version at the "Support" widget.
+</code>
@@ Line 105: / Line 111: @@
   * the Ratio set up
-It's supposed operator no need to change frequency acceleration and this setting is hidden from operator.
+It's supposed operator no need to change frequency acceleration and this setting is hidden from an  operator.
 The acceleration can be set up in the Software or Hardware PLC for example.
@@ Line 127: / Line 133: @@
 </code>
+==== (Coolant) Pulse Generator control through Hardware PLC ====
+Function coolant_motor_start() is addaed to "mill-func.h" include file
+<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
+<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. Just need to write "0" to the raw frequency register.
+<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>