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--- plc:plc_gas_cutting_implementation [2017/06/06 21:39] – skirillov
+++ plc:plc_gas_cutting_implementation [2017/06/07 00:36] – skirillov
@@ Line 290: / Line 290: @@
 {{gas-control-004.png?600}}
+  * H1 - Safe Height, defined as distance from cutting height at the end of previous cut. Ignition process started on Safe Height. A system waits 1-2 seconds for stable flame process, then switch to Preheat Process and moves torch down to -
+  * H2 - Preheat Height - defined by Capacitory Height Sensor value. After Preheat process finished, valves switched to "Start Pierce" and torch moved to
+  * H3 - Pierce Height defined as distance from preheat height. After Pierce is finished, Cutting and toolpath motion started, THC is activated and toch moved down by Torch Height Control to
+  * H4 - Cutting Height, defined as Torch Height Control Reference value.
+<code c M03.plc>
+#include pins.h
+#include vars.h
+main()
+{
+ portset(OUTPUT_FUEL);         //On Valves for ignition
+ portset(OUTPUT_IGNITION);
+ portset(OUTPUT_OXY_HEAT_LO);
+ proc=plc_proc_ignition;
+ timer=timeout_ignition;       //Set Ignition process
+ do{ timer--; }while(timer>0); //wait ignition
+ portclr(OUTPUT_IGNITION);
+ portset(OUTPUT_OXY_HEAT_HI);
+ proc=plc_proc_preheat;
+ break_heating=1;
+ timer=timeout_preheat;
+ gvarset(7080,2000);           //setup Z axis Speed
+ h=0-30000;
+ g0moveA(0x0,0x4,h);           //Z axis, move down
+ do{ timer++; }while (adc01<ihc_preheat_height);
+ //wait in the loop till Current Height from Height Sensor (adc01)
+ //less than given value of ihc_preheat_height;
+ //then stop motion and continue preheat process
+ message=PLCCMD_LINE_STOP;//stop motion
+ do { code=gvarget(6060); } while(code!=0x4d);
+ //wait till motion finished
+ do{ timer--;
+ if (break_heating==0) { timer=0; };
+ } while(timer>0);             //heating loop
+ portset(OUTPUT_OXY_CUT_LO);   //add Oxygen Cutting Lo pressure
+ gvarset(7080,2000);
+ g0moveA(0x0,0x4,ihc_pierce_height);  //Z axis, move up
+ timer=100; do{ timer--; }while (timer>0);
+ //after 0.1sec delay motion is definetely started
+ do { timer++;code=gvarget(6060); }while(code!=0x4d);
+ //then ait till motion finished
+ timer=timeout_soft_start;
+ do{ timer--; }while(timer>0); //wait for Soft Oxygen start
+ portset(OUTPUT_OXY_CUT_HI);   //add Oxygen Cutting Hi pressure
+ timer=ihc_pierce_time;
+ do{ timer--; }while(timer>0); //wait for Pierce
+ portclr(OUTPUT_OXY_HEAT_HI);   //add Oxy Cutting Hi pressure
+ if (thc_enabled!=0)
+ {
+    command=0xa4;//Start Height sensing
+    parameter=1;
+    message=PLCCMD_SET_CNC_VAR;
+    texit=timer+3;do{timer++;}while(timer<texit);
+ };
+ proc=plc_proc_cutting;
+exit(99);
+};
+</code>