[mitzpetel]

I am having a problem with my machine.
Every time I try to run a gcode file bigger than 1300 lines I get buffer starvation error on the 4th ot 5th line.

I tried to switch to a better computer ( intel i3 4gb ram) and it did the same problem.

What's wrong?

[TomKerekes]

Hi mitzpetel,

Do you have a Mach3 License? Does it show in the About Dialog? What Version of Mach3? What Version of KMotion? What Buffer Time do you have set in the Dynomotion Plugin?

Regards

[mitzpetel]

The Mach3 is licensed and I am using the latest versions of kmotion (4.32) and mach3 (3.043.66)

The exact message it shows is "Unexpected motion buffer starved"

this is the init file:

#include "KMotionDef.h"

#define QA 26 // define to which IO bits the AB signals are connected
#define QB 27

main()
{
int BitA,Change1=0,Change2=0, DiffX2;
int PosNoWrap, NewPos, Pos=0, wraps;
double Factor=0;

FPGA(STEP_PULSE_LENGTH_ADD)=32;

SetBit(146);
SetBit(147);
SetBit(148);

ch0->InputMode=ENCODER_MODE;
ch0->OutputMode=DAC_SERVO_MODE;
ch0->Vel=1000000;
ch0->Accel=4000000;
ch0->Jerk=2e+006;
ch0->P=0.35;
ch0->I=0.004;
ch0->D=0.01;
ch0->FFAccel=0;
ch0->FFVel=0;
ch0->MaxI=300;
ch0->MaxErr=5000;
ch0->MaxOutput=2000;
ch0->DeadBandGain=1;
ch0->DeadBandRange=10;
ch0->InputChan0=0;
ch0->InputChan1=1;
ch0->OutputChan0=0;
ch0->OutputChan1=1;
ch0->MasterAxis=-1;
ch0->LimitSwitchOptions=0x105;
ch0->LimitSwitchNegBit=136;
ch0->LimitSwitchPosBit=0;
ch0->SoftLimitPos=1e+009;
ch0->SoftLimitNeg=-1e+009;
ch0->InputGain0=-1;
ch0->InputGain1=-1;
ch0->InputOffset0=0;
ch0->InputOffset1=0;
ch0->OutputGain=-1;
ch0->OutputOffset=0;
ch0->SlaveGain=1;
ch0->BacklashMode=BACKLASH_OFF;
ch0->BacklashAmount=0;
ch0->BacklashRate=0;
ch0->invDistPerCycle=1;
ch0->Lead=0;
ch0->MaxFollowingError=100;
ch0->StepperAmplitude=250;

ch0->iir[0].B0=1;
ch0->iir[0].B1=0;
ch0->iir[0].B2=0;
ch0->iir[0].A1=0;
ch0->iir[0].A2=0;

ch0->iir[1].B0=1;
ch0->iir[1].B1=0;
ch0->iir[1].B2=0;
ch0->iir[1].A1=0;
ch0->iir[1].A2=0;

ch0->iir[2].B0=1;
ch0->iir[2].B1=0;
ch0->iir[2].B2=0;
ch0->iir[2].A1=0;
ch0->iir[2].A2=0;
EnableAxisDest(0,0);

ch1->InputMode=ENCODER_MODE;
ch1->OutputMode=DAC_SERVO_MODE;
ch1->Vel=800000;
ch1->Accel=4000000;
ch1->Jerk=4e+006;
ch1->P=1.3;
ch1->I=0.003;
ch1->D=0.001;
ch1->FFAccel=0;
ch1->FFVel=0;
ch1->MaxI=2000;
ch1->MaxErr=100;
ch1->MaxOutput=2000;
ch1->DeadBandGain=1;
ch1->DeadBandRange=0;
ch1->InputChan0=1;
ch1->InputChan1=1;
ch1->OutputChan0=1;
ch1->OutputChan1=1;
ch1->MasterAxis=-1;
ch1->LimitSwitchOptions=0x121;
ch1->LimitSwitchNegBit=137;
ch1->LimitSwitchPosBit=0;
ch1->SoftLimitPos=1e+009;
ch1->SoftLimitNeg=-1e+009;
ch1->InputGain0=-1;
ch1->InputGain1=1;
ch1->InputOffset0=0;
ch1->InputOffset1=0;
ch1->OutputGain=-1;
ch1->OutputOffset=0;
ch1->SlaveGain=1;
ch1->BacklashMode=BACKLASH_OFF;
ch1->BacklashAmount=0;
ch1->BacklashRate=0;
ch1->invDistPerCycle=1;
ch1->Lead=0;
ch1->MaxFollowingError=50;
ch1->StepperAmplitude=250;

ch1->iir[0].B0=1;
ch1->iir[0].B1=0;
ch1->iir[0].B2=0;
ch1->iir[0].A1=0;
ch1->iir[0].A2=0;

ch1->iir[1].B0=1;
ch1->iir[1].B1=0;
ch1->iir[1].B2=0;
ch1->iir[1].A1=0;
ch1->iir[1].A2=0;

ch1->iir[2].B0=1;
ch1->iir[2].B1=0;
ch1->iir[2].B2=0;
ch1->iir[2].A1=0;
ch1->iir[2].A2=0;
EnableAxisDest(1,0);

ch2->InputMode=NO_INPUT_MODE;
ch2->OutputMode=STEP_DIR_MODE;
ch2->Vel=500;
ch2->Accel=200;
ch2->Jerk=6e+006;
ch2->P=1;
ch2->I=0;
ch2->D=0;
ch2->FFAccel=500;
ch2->FFVel=0;
ch2->MaxI=2000;
ch2->MaxErr=1e+008;
ch2->MaxOutput=2000;
ch2->DeadBandGain=1;
ch2->DeadBandRange=0;
ch2->InputChan0=4;
ch2->InputChan1=1;
ch2->OutputChan0=12;
ch2->OutputChan1=1;
ch2->MasterAxis=-1;
ch2->LimitSwitchOptions=0x120;
ch2->LimitSwitchNegBit=138;
ch2->LimitSwitchPosBit=0;
ch2->SoftLimitPos=1e+009;
ch2->SoftLimitNeg=-1e+009;
ch2->InputGain0=1;
ch2->InputGain1=1;
ch2->InputOffset0=0;
ch2->InputOffset1=0;
ch2->OutputGain=1;
ch2->OutputOffset=0;
ch2->SlaveGain=1;
ch2->BacklashMode=BACKLASH_OFF;
ch2->BacklashAmount=0;
ch2->BacklashRate=0;
ch2->invDistPerCycle=1;
ch2->Lead=0;
ch2->MaxFollowingError=10000000;
ch2->StepperAmplitude=250;

ch2->iir[0].B0=1;
ch2->iir[0].B1=0;
ch2->iir[0].B2=0;
ch2->iir[0].A1=0;
ch2->iir[0].A2=0;

ch2->iir[1].B0=1;
ch2->iir[1].B1=0;
ch2->iir[1].B2=0;
ch2->iir[1].A1=0;
ch2->iir[1].A2=0;

ch2->iir[2].B0=1;
ch2->iir[2].B1=0;
ch2->iir[2].B2=0;
ch2->iir[2].A1=0;
ch2->iir[2].A2=0;

EnableAxisDest(2,0);

EnableAxis(0);
EnableAxis(1);
EnableAxis(2);

DefineCoordSystem(0,1,2,-1);

SetBitDirection( 43, 1);

SetBitDirection(1024, 1);
SetBitDirection(1025, 0);
ClearBit(1024);

/* while emergency stop wasn't pressed */
while ( !ReadBit(143) )
{
WaitNextTimeSlice();
}

printf("EMERGENCY STOP PRESSED");
/* disable all axises */
ClearBit(144);
ClearBit(145);
ClearBit(146);
ClearBit(147);
ClearBit(148);

DisableAxis(0);
DisableAxis(1);
DisableAxis(2);

SetBit(1024);

return 0;
}

[TomKerekes]

Hi mitzpetel,

That all looks reasonable.

What Buffer Time do you have set in the Dynomotion Plugin?

If you run KMotion.exe at the same time are any messages printed on the Console Screen?

Regards

[mitzpetel]

The buffer time is 3 seconds.

[TomKerekes]

If you run KMotion.exe at the same time are any messages printed on the Console Screen?

[mitzpetel]

I solved the problem.

In the console it said that there is following error on the axis 1.
I tweaked it a little bit and now it's fine.

Thanks for the help.