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--- plc:m88_m89_stop_motion_from_plc_if_input_pin_activated [2018/09/25 11:21] – created skirillov
+++ plc:m88_m89_stop_motion_from_plc_if_input_pin_activated [2018/09/25 13:14] – skirillov
@@ Line 1: / Line 1: @@
 ===== M88, M89 PLC procedures. Stop Motion if Input pin activated =====
+One of the most popular job for the PLC procedure is moving to given direction till input pin triggered.
+It's used in
+  * Homing procedures,
+  * Probing,
+  * Tool Length measure
+  * Surface measure
+  * Gantry Alignment procedure
+  * and many others
+This procedure can be handled in Hardware PLC. We offer M88 and M89 PLC procedures which do this job as a standard procedure. However, it can be customized easily according to customer needs.
+<code C M88.plc>
+//Watch on given sensor number, Soft Stop if sensor triggered
+//used for homing, surface measure, tool length measure etc
+main ()
+{
+  input=eparam&0xFFFF;	//P-parameter
+  state=eparam>>16;	//L-parameter
+  timer=0;
+  message=PLCCMD_MOTION_CONTINUE;
+  timer=30;do{timer--;}while(timer>0);
+  ready=0;
+  do {
+    a=portget(input);
+    if (state==0)
+    {
+      if (a==0) {ready=1;};
+    };
+    if (state!=0)
+    {
+      if (a!=0) {ready=1;};
+    };
+  }while(ready==0);
+  message=PLCCMD_MOTION_SOFT_SKIP;
+  timer=30;do{timer--;}while(timer>0);
+  exit(99);
+};
+</code>