Attachments :

I'm trying to implement spindle control as outlined in the guide.
Spindle is a brushless DC motor with encoder, configured on channel 4.
(CMD, jog4=2000) gets the spindle turning at the right speed, so I'm pretty sure the channel is correctly configured


MySpindleDefs.h contains:
#define SPINDLEAXIS 4            // Axis Channel to Jog to rotate Spindle
#define FACTOR (4000./60.0)      // to convert RPM to counts/sec (counts/rev / 60.0sec)
#define SPINDLECW_BIT 154       // bit to activate to cause CW rotation
#define SPINDLECCW_BIT 155        // bit to activate to cause CCW rotation
#define SPEEDVAR 99                // global persistant variable to store latest speed
#define STATEVAR 98                // global persistant variable to store latest state (-1=CCW,0=off,1=CW)
#define KMVAR PC_COMM_CSS_S    // variable KMotionCNC will pass speed parameter (113)
#define USE_POS_NEG_VOLTAGE 0     // 0 = output Magnitude, 1 = output positive and negative speed

The tool setup screen looks like this:


If I issue an M3 or click the "on cw" button on KMotionCNC, the console shows "Jogging Spindle 0.00000 counts/sec.
If I issue M5 of click off, I get Jogging Spindle Stop.

Hence, the programs are being run, but they apparently are not getting the Spindle speed.
I expect I'm missing something painfully obvious, but am not seeing what it is.

Configure the Var for your S Action to use 113 not 99.

113 (KMVAR)is where the S program is expecting to receive the new speed
from KMotionCNC. 99 is used to keep track of last commanded Speed
communicated between the various C Programs.

HTH
Regards
TK

On 2016-10-12 12:32, David Strip David@... [DynoMotion]
wrote:

> I'm trying to implement spindle control as outlined in the guide.
> Spindle is a brushless DC motor with encoder, configured on channel 4.
> (CMD, jog4=2000) gets the spindle turning at the right speed, so I'm
> pretty sure the channel is correctly configured
>
> MySpindleDefs.h contains:
> #define SPINDLEAXIS 4 // Axis Channel to Jog to rotate
> Spindle
> #define FACTOR (4000./60.0) // to convert RPM to counts/sec
> (counts/rev / 60.0sec)
> #define SPINDLECW_BIT 154 // bit to activate to cause CW
> rotation
> #define SPINDLECCW_BIT 155 // bit to activate to cause CCW
> rotation
> #define SPEEDVAR 99 // global persistant variable to
> store latest speed
> #define STATEVAR 98 // global persistant variable to
> store latest state (-1=CCW,0=off,1=CW)
> #define KMVAR PC_COMM_CSS_S // variable KMotionCNC will pass speed
> parameter (113)
> #define USE_POS_NEG_VOLTAGE 0 // 0 = output Magnitude, 1 = output
> positive and negative speed
>
> The tool setup screen looks like this:
>
> If I issue an M3 or click the "on cw" button on KMotionCNC, the
> console shows "Jogging Spindle 0.00000 counts/sec.
> If I issue M5 of click off, I get Jogging Spindle Stop.
>
> Hence, the programs are being run, but they apparently are not getting
> the Spindle speed.
> I expect I'm missing something painfully obvious, but am not seeing
> what it is.
>

Configure the Var for your S Action to use 113 not 99.

113 (KMVAR)is where the S program is expecting to receive the new speed
from KMotionCNC. 99 is used to keep track of last commanded Speed
communicated between the various C Programs.

HTH
Regards
TK

that solved it.
Thanks

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