Differences

This shows you the differences between two versions of the page.

--- plc:spindle_speed_control_through_-10v_dac_channel_et10 [2017/10/16 12:44] – skirillov
+++ plc:spindle_speed_control_through_-10v_dac_channel_et10 [2022/09/13 13:51] (current) – ivan
@@ Line 47: / Line 47: @@
 {{doc-mycnc-dac-offset.png}}
+=== New functionality for DAC control ===
+As of September 2022, the firmware for the ET10 boards has been updated to make DAC control easier. For instance, now users can run code such as this:
+<code C>main()
+{  timer=0;
+  proc=plc_proc_spindle;
+  val=eparam;  //for ET6-ET9
+  //if (val>0xfff) {val=0xfff;};
+  //if (val<0) {val=0;};  //for ET10 -ET12
+  val=2048+val/2;
+  if (val>0xFFF) {val=0xFFF;};  dac01=val;
+  gvarset(7371,eparam);
+  timer=30;do{timer--;}while(timer>0); //Spindle State
+  dac01=val;
+  portclr(OUTPUT_CCW_SPINDLE);
+  portset(OUTPUT_SPINDLE);
+  gvarset(7370,1);timer=30;do{timer--;}while (timer>0); //Spindle State
+  gvarset(7371,eparam);timer=30;do{timer--;}while (timer>0); //Spindle Speed Mirror register
+  //gvarset(7372,0);//Mist State
+  //timer=30;do{timer--;}while (timer>0); //
+  //gvarset(7373,0);//Flood State
+  //timer=30;do{timer--;}while (timer>0); //</code>
+Here, we are utilizing the usual ''dac01'' variable instead of the more complex solutions used in the past:
+{{:plc:dac-et10-new-001.png}}
+You can change the DAC used in the following config window, however it will still be listed as ''dac01'' in the PLC:
+{{:plc:dac-et10-new-002.png}}
+Please note that since it is necessary to have a voltage value between -10 and +10 V, the value of 2048 is assigned to 0V. Therefore, for the maximum value we will be adding 2048 (i.e.,  the original value divided by 2, as can be seen in the   ''val=2048+val/2'' line).