Spindle Uppper and Lower Limit (Or, how to change speed step size)
21 Jan 2023 21:17 - 21 Jan 2023 21:24 #262609
by Askjerry
Replied by Askjerry on topic Spindle Uppper and Lower Limit (Or, how to change speed step size)
It's Alive !!
Tommylight - Ok, I'll leave it going forward.
Chris@cnc - I owe you BIG TIME!
It worked like a champ... no errors. I downloaded your file directly into my LAGUNA-BOGUS folder. (Running SIM mode in the house, will go out to the garage shortly and do the same on the real machine.) I followed the compile instructions and had no errors... very simple process once you understand it.
I made a slight change to the function such that anything over 25K will run the same bit pattern. Tested fine.
Again... very excited, and thank you for both giving me a complete solution, and for teaching me a new useful (and dangerous) skill!
Tommylight - Ok, I'll leave it going forward.
Chris@cnc - I owe you BIG TIME!
It worked like a champ... no errors. I downloaded your file directly into my LAGUNA-BOGUS folder. (Running SIM mode in the house, will go out to the garage shortly and do the same on the real machine.) I followed the compile instructions and had no errors... very simple process once you understand it.
I made a slight change to the function such that anything over 25K will run the same bit pattern. Tested fine.
FUNCTION(_) {
// 0 to 10K RPM
if((spindelspeed) >0 && (spindelspeed) <=10999) {
out1=1;
out2=0;
out3=0;
}
// 15K
else if((spindelspeed) >=11000 && (spindelspeed) <=15999) {
out1=0;
out2=1;
out3=0;
}
// 20K
else if((spindelspeed) >=20000 && (spindelspeed) <=24999) {
out1=1;
out2=1;
out3=0;
}
// 25K
else if((spindelspeed) >=25000 ) {
out1=0;
out2=0;
out3=1;
}
}Again... very excited, and thank you for both giving me a complete solution, and for teaching me a new useful (and dangerous) skill!
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22 Jan 2023 07:37 #262637
by Askjerry
Replied by Askjerry on topic Spindle Uppper and Lower Limit (Or, how to change speed step size)
I am really getting the hang of this I think... much to learn, but comfortable.
I realized the pins are ACTIVE LOW, so I had to reverse the logic in them, and I also added a pin fixedspeed so that I could create a pyvcp panel that shows the commanded speed along with the actual or ADJ speed. It worked out well. I also corrected spindelspeed to spindlespeed while I was in there.
Tomorrow I need to handle one more thing... the sensors output 24vdc and the parallel circuit is 5vdc. The solution is to use three 4N35 optocouplers. I run the input signal to pin-1 va a 3.3K resistor, and connect ground to pin2. The output is taken from pin-4, and a 5vdc ia applied to pin-5. At that point, I define the home switches to the paraport inputs, and it should be fully functional.
I did have one issue that I solved in an oddball way. As the spindle pins are active-low, when I first turn on the computer, the spindle wants to run at 40,000 RPM.
That is not a good thing! The breakout boards have a relay with NC-COM-NO connections, and if the computer is off, they are both off... when the computer is booting and before AXIS, they are both on. So I routed the ground through the NO pin of the first relay, and into the NC pin of the second relay. The only way the spindle can run is if relay-1 is off and relay-2 is on. It is a bit Rube-Goldberg... but it works.
Ok... off to bed! Thanks again everyone!!!
Jerry
I realized the pins are ACTIVE LOW, so I had to reverse the logic in them, and I also added a pin fixedspeed so that I could create a pyvcp panel that shows the commanded speed along with the actual or ADJ speed. It worked out well. I also corrected spindelspeed to spindlespeed while I was in there.
component decoder " ";
description
"""
//Compile :
//halcompile --compile decoder.comp
//sudo halcompile --install decoder.comp
//Halfile load :
//loadrt decoder
//addf decoder.0 servo-thread
//setp decoder.0.spindlespeed 0
/* 4 Bit Spindlespeed decoder
If speed 0-10000 -> out1
If speed 10000-15000 -> out2
If speed 15000-20000 -> out1 + out2
If speed 20000-25000 -> out3
*/
""";
author "Christian Schorsch";
license "GPL";
// Input pins
pin in float spindlespeed=0; //speed float in
// Output pins
pin out bit out1=1;
pin out bit out2=1;
pin out bit out3=1;
pin out float fixedspeed=0;
// Global variables
//variable float timer=0;
function _;
;;
#include "rtapi_math.h"
FUNCTION(_) {
// 1 to 10K RPM
if((spindlespeed) >100 && (spindlespeed) <=10999) {
out1=0;
out2=1;
out3=1;
fixedspeed=10000;
}
//Spindle Less than 100 RPM
else if((spindlespeed) <101 ) {
out1=1;
out2=1;
out3=1;
fixedspeed=0;
}
// 15K
else if((spindlespeed) >=11000 && (spindlespeed) <=19999) {
out1=1;
out2=0;
out3=1;
fixedspeed=15000;
}
// 20K
else if((spindlespeed) >=20000 && (spindlespeed) <=24999) {
out1=0;
out2=0;
out3=1;
fixedspeed=20000;
}
// 25K
else if((spindlespeed) >=25000 ) {
out1=1;
out2=1;
out3=0;
fixedspeed=25000;
}
}Tomorrow I need to handle one more thing... the sensors output 24vdc and the parallel circuit is 5vdc. The solution is to use three 4N35 optocouplers. I run the input signal to pin-1 va a 3.3K resistor, and connect ground to pin2. The output is taken from pin-4, and a 5vdc ia applied to pin-5. At that point, I define the home switches to the paraport inputs, and it should be fully functional.
I did have one issue that I solved in an oddball way. As the spindle pins are active-low, when I first turn on the computer, the spindle wants to run at 40,000 RPM.
Ok... off to bed! Thanks again everyone!!!
Jerry
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22 Jan 2023 12:09 - 22 Jan 2023 12:18 #262652
by chris@cnc
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22 Jan 2023 14:40 #262661
by Askjerry
Replied by Askjerry on topic Spindle Uppper and Lower Limit (Or, how to change speed step size)
The problem is upon powering the PC on, that pin also comes up high and then goes low... so the spindle suddenly starts up and as the other pins are low it gets the bit pattern 0,0,0 which is 40,000 RPM and it really screams.
This way, there will NEVER be a situation where they are in the needed relay1=on and relay2=off. It powers up as off/off and when AXIS starts they jump to on/on. It's crazy, but it is now VERY stable... and I have no need to use paraport-14 on the first board anyway.
So the document page makes a local document that can be viewed if the user needs to remember how to use the function? I will give it a try on what I have and see what it looks like... then evaluate what you did (The .P .RS .TP and .RS to see what they do so I understand them better.)
Where is the manual for this version of C? I need to study and experiment with it for future projects and enhancements. And I noticed after upgrading the garage computer... it produces a somefile.ko while inside the house, that computer produces a somefile.so which are both placed into different folders too. Odd... must have something to do with the Linux version used. In either case... they work properly, and I now have this as a reference to compile future works.
But I do need a link to the manual so I can see what else is possible.
Thanks,
Jerry
This way, there will NEVER be a situation where they are in the needed relay1=on and relay2=off. It powers up as off/off and when AXIS starts they jump to on/on. It's crazy, but it is now VERY stable... and I have no need to use paraport-14 on the first board anyway.
So the document page makes a local document that can be viewed if the user needs to remember how to use the function? I will give it a try on what I have and see what it looks like... then evaluate what you did (The .P .RS .TP and .RS to see what they do so I understand them better.)
Where is the manual for this version of C? I need to study and experiment with it for future projects and enhancements. And I noticed after upgrading the garage computer... it produces a somefile.ko while inside the house, that computer produces a somefile.so which are both placed into different folders too. Odd... must have something to do with the Linux version used. In either case... they work properly, and I now have this as a reference to compile future works.
But I do need a link to the manual so I can see what else is possible.
Thanks,
Jerry
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