idk why lathe changes

[turbothis]

man, my old lathe did the same thing where it just behaves super different after a while of nothing changing
my spindle is sluggish and non responsive to parameter changes in the C program
a week ago the X axis was running off at times
now the Z axis is running off......

both my mills where/are dead bang bet my life stable!
both lathes work great at times and then just change terrible

i dont even know where to start looking

i have super OCD and skeptical of things like old versions of dynomotion cnc on then computer. like it is using an old one or blending or who knows

[Moray]

Nothing should change without a reason, but to eliminate the possibility of something pointing to an old install, rename the directories.
I usually put an 'x' at the end, so that way if anything does happen to still be using an old install, it will break the link and generate an error, and renaming avoids deleting anything that you might still need.

[TomKerekes]

The approach I usually use when things are misbehaving is to try to identify one, hopefully simple, single thing, that is not working correctly. Then do a deep dive to try to determine why.

[turbothis]

i guess start with the spindle

the spindle shows the DAC at full power and yet the motor is winding up 100x slower than it should
it completely over shoots both ways even with full DAC command
i am about to put voltage gauges on DAC outputs and servo power supplies

so only CCW jog, spindle jog, off jog, settings and spindle def controls the actual spindle right????
right now CW jog does not even move
where does the myspindledefs file supposed to live?

Code: Select all

#include "KMotionDef.h"

#include "MySpindleDefs.h"

int   *css_mode = &persist.UserData[PC_COMM_CSS_MODE];			// Mode 1=Normal RPM mode. 2=CSS

// desired speed is passed from KMotionCNC in variable KMVAR
// save in user variable STATEVAR whether it was off, CW, or CCW (0,1,-1)
// save in user variable SPEEDVAR the last desired speed

main()
{
	float speed = *(float *)&persist.UserData[SPEEDVAR];  // value stored is actually a float 
	int LastState = persist.UserData[STATEVAR];  // get last state 
	
		if (CS0_axis_a == -1 && !ch2->Enable)		// is A axis not defined in the Coordinate System and not enabled?
		EnableAxis(2);			// yes, enable the axis
	
	if (LastState==1)  
	{
		// if spindle was CW now we want CCW 
		// spin down
		
		ClearBit(SPINDLECW_BIT);
		ClearBit(SPINDLECCW_BIT);
		Jog(SPINDLEAXIS,0);
		while (!CheckDone(SPINDLEAXIS)) ;
	}
	
	// turn spindle on CCW and ramp to new speed
	SetBit(SPINDLECCW_BIT);
	
	LastState = -1;
	
	if (*css_mode != 2)
	{
		// spindle is already on, so ramp to new speed
		if (USE_POS_NEG_VOLTAGE)
			Jog(SPINDLEAXIS,speed * FACTOR * LastState);
		else
			Jog(SPINDLEAXIS,speed * FACTOR);
		
		printf("Jogging Spindle %f counts/sec\n",speed * FACTOR);
	}	
	persist.UserData[STATEVAR] = -1;  // remember we are CCW
}

Code: Select all

#include "KMotionDef.h"

#include "MySpindleDefs.h"

int   *css_mode = &persist.UserData[PC_COMM_CSS_MODE];			// Mode 1=Normal RPM mode. 2=CSS

// desired speed is passed from KMotionCNC in variable KMVAR
// save in user variable STATEVAR whether it was off, CW, or CCW (0,1,-1)
// save in user variable SPEEDVAR the last desired speed

main()
{
	float speed = *(float *)&persist.UserData[KMVAR];  // value stored is actually a float 
	int  LastState = persist.UserData[STATEVAR];  // get last state 
	
	persist.UserData[SPEEDVAR] = persist.UserData[KMVAR];  // Always save the last desired speed 
	
	if (LastState==0 || *css_mode == 2)  
	{
		// if spindle is off (or CSS mode) and User Changes the speed 
		// just save the desired speed
		
		return 0;
	}
	
	// spindle is already on, so ramp to new speed
	if (USE_POS_NEG_VOLTAGE)
		Jog(SPINDLEAXIS,speed * FACTOR * LastState);
	else
		Jog(SPINDLEAXIS,speed * FACTOR);
		
	printf("Jogging Spindle %f counts/sec\n",speed * FACTOR);
}

Code: Select all

#include "KMotionDef.h"

#include "MySpindleDefs.h"


// desired speed is passed from KMotionCNC in variable KMVAR
// save in user variable STATEVAR whether it was off, CW, or CCW (0,1,-1)
// save in user variable SPEEDVAR the last desired speed

main()
{
	// spin down

	ClearBit(SPINDLECW_BIT);
	ClearBit(SPINDLECCW_BIT);
	Jog(SPINDLEAXIS, 0);
	printf("Jogging Spindle Stop\n");
	persist.UserData[STATEVAR] = 0;	// remember we are Off
	while (!CheckDone(SPINDLEAXIS));
	if (CS0_axis_a == -1)		// is A axis not defined in the Coordinate System?
		DisableAxis(2);			// yes, disable the axis, otherwise leave it enabled
}

[turbothis]

stuff like the c code changing

Code: Select all

	ch0->InputMode=ENCODER_MODE;
	ch0->OutputMode=DAC_SERVO_MODE;
	ch0->Vel=10000;
	ch0->Accel=50000000;
	ch0->Jerk=50000000;
	ch0->P=10;
	ch0->I=0;
	ch0->D=20;

to

Code: Select all

	ch0->InputMode=ENCODER_MODE;
	ch0->OutputMode=DAC_SERVO_MODE;
	ch0->Vel=10000;
	ch0->Accel=5e+07;
	ch0->Jerk=5e+07;
	ch0->P=10;
	ch0->I=0;
	ch0->D=20;

really makes me think it is doing more stuff
is there any way to turn off this scientific notation auto thing?

[turbothis]

maybe the computer is bad?
i mean i am just slowly checking things in dyno cnc and it locks up the program.....

[TomKerekes]

Actually 50000000 and 5e7 are the same. The e7 means to shift the decimal 7 places to the right. If you have 50000000 in the C program and import it to KMotion and export it back to C it will change to 5e7. But it won't change by itself.

Again rather than jumping all around I'd focus on one thing at a time.

the spindle shows the DAC at full power

It isn't clear what you mean by this. How can the Spindle show anything? Maybe you mean the DAC is at 2047? If so the DAC voltage should be -10V. Measure with a Voltmeter. What is it?

Also check the CW and CCW bits to the Spindle. Are they set properly? How is the Spindle supposed to be controlled? Your MySpindleDefs.h has UsePosNegVoltage set so I'm guessing it uses +/-10 to control the direction. What type of control bits does it have?

the motor is winding up 100x slower than it should

It isn't clear what you mean by this. Is its velocity low? Or high but gradually accelerating?

so only CCW jog, spindle jog, off jog, settings and spindle def controls the actual spindle right????
right now CW jog does not even move

Normally yes. But some of your code seems to indicate you are also using the Spindle as an A Axis. Are you?

where does the myspindledefs file supposed to live?

In the same folder as the Spindle Programs.

[turbothis]

thanks for the reply
im already over 6 hours into it today and fried.
maybe tonight i can try and put together some questions and info together

on a side note, while trying to get this going the windows desktop background just goes black for a while...... then comes back and on and on. lol

[turbothis]

if i use the
SpindleUsingJogs\SpindleOnCWJogV2.c
SpindleUsingJogs\SpindleOnCCWJogV2.c
SpindleUsingJogs\SpindleOffJogV2.c

for spindle control, what do i use for the speed?

[TomKerekes]

It would be SpindleMillJogV2.c but those are obsolete. Please use the ones in \SpindleUsingJogs\CSS\