Dynomotion

Group: DynoMotion Message: 13979 From: cnc_machines Date: 11/2/2016
Subject: Jog Motor - Toggle Switch

Greetings,


I am trying to use an infinite loop and a toggle switch to jog an axis. 


for (;;) // loop forever

{

if(ReadBit(1041)) //Check switch

{

Jog(5,5000);

}

else

{

Jog(5,0);

}


The problem is, it repeats the command so many times that the axis doesn't actually move. Does anyone have a suggestion on how I can make this work? 


I already have KMotionCNC setting an IO to turn the spindle on/off - I just clear the IO right before I jog the axis. I would like the manual switch to work only when a G-Code program is not running. I have been setting a bit and clearing it at the end of the NC program - maybe there is a better way?


Thanks,


Scott
Group: DynoMotion Message: 13981 From: Tom Kerekes Date: 11/2/2016
Subject: Re: Jog Motor - Toggle Switch

Hi Scott,

Write the code to only call the Jog Functions when the bit changes state not based on state.

#1 add an int variable to save the last state

#2 initialize the last state variable to the current state.

#3 in the loop check if the Input changed  (when new state != old state)

#4 only when it changes do the appropriate thing based on the new state

#5 at the end of each loop set the last state equal to the new state.

HTH
Regards
TK


On 11/2/2016 2:29 PM, cnc_machines@... [DynoMotion] wrote:
 

Greetings,


I am trying to use an infinite loop and a toggle switch to jog an axis. 


for (;;) // loop forever

{

if(ReadBit(1041)) //Check switch

{

Jog(5,5000);

}

else

{

Jog(5,0);

}


The problem is, it repeats the command so many times that the axis doesn't actually move. Does anyone have a suggestion on how I can make this work? 


I already have KMotionCNC setting an IO to turn the spindle on/off - I just clear the IO right before I jog the axis. I would like the manual switch to work only when a G-Code program is not running. I have been setting a bit and clearing it at the end of the NC program - maybe there is a better way?


Thanks,


Scott
Group: DynoMotion Message: 13986 From: cnc_machines Date: 11/3/2016
Subject: Re: Jog Motor - Toggle Switch
Awesome! Got it working!

Thanks,

Scott
Group: DynoMotion Message: 13987 From: Tom Kerekes Date: 11/3/2016
Subject: Re: Jog Motor - Toggle Switch

Great.  You are now a dangerous C Programmer :}

TK


On 11/3/2016 3:30 PM, cnc_machines@... [DynoMotion] wrote:
 

Awesome! Got it working!


Thanks,

Scott
Group: DynoMotion Message: 14242 From: cnc_machines Date: 12/7/2016
Subject: Re: Jog Motor - Toggle Switch
Tom,

Things are getting a bit more complicated, and I am stuck again. Now I have 3 sensors, and am trying to jog an axis in an infinite loop. Basically I need to track the state of all three sensors, and if it changes alter a jog speed accordingly.

I am struggling to find an efficient way to do this. Can I read the sensor states in as binary numbers? Then I check the binary number for changes every loop, and if it changes I would alter the motor speed accordingly?

If so - could you help me understand how to convert sensor states to binary? Also how to compare a binary number to an integer to do specific tasks?

Sensor 1 Sensor 2 Sensor 3 Decimal Motor Speed
1 1 1 7 Stop
0 1 1 3 Slow
1 0 1 5 Stop
0 0 1 1 Slow
1 1 0 6 Stop
0 1 0 2 Slow
1 0 0 4 Fast
0 0 0 0 Fast

Thanks,

Scott
Group: DynoMotion Message: 14246 From: Tom Kerekes Date: 12/8/2016
Subject: Re: Jog Motor - Toggle Switch

Hi Scott,

You might do something like

int value;
float Speed;
value = ReadBit(S1)*4 + ReadBit(S2)*2 + ReadBit(S3); // form decimal value
if (value >=5)
    Speed=0.0;  //stop
else if (value === 0 || value == 4)
    Speed=100000;  // fast
else
    Speed= 100; //slow


HTH
Regards
TK


On 12/7/2016 4:14 PM, cnc_machines@... [DynoMotion] wrote:
 

Tom,


Things are getting a bit more complicated, and I am stuck again. Now I have 3 sensors, and am trying to jog an axis in an infinite loop. Basically I need to track the state of all three sensors, and if it changes alter a jog speed accordingly.

I am struggling to find an efficient way to do this. Can I read the sensor states in as binary numbers? Then I check the binary number for changes every loop, and if it changes I would alter the motor speed accordingly?

If so - could you help me understand how to convert sensor states to binary? Also how to compare a binary number to an integer to do specific tasks?

Sensor 1 Sensor 2 Sensor 3 Decimal Motor Speed
1 1 1 7 Stop
0 1 1 3 Slow
1 0 1 5 Stop
0 0 1 1 Slow
1 1 0 6 Stop
0 1 0 2 Slow
1 0 0 4 Fast
0 0 0 0 Fast

Thanks,

Scott