I try to install four external buttons to use them as ,Cycle Start, Feedhold, Stop end Reverse movement, in a feedhold state. By looking the c example "external buttons.c" everything i need is there, except for the reverse movement function. Does anybody know, how can i implement that?

I think you can do a negative value in the FRO variable with:

Thank a lot for the reply.
I will test it tomorrow and let you know.

Actually I think KMotionCNC will ignore negative FRO values.

You should be able to command KFLOP directly to reverse feed with this
call:

void SetFROTemp(float FRO); // Temporarily change from current to the
specified FRO using a nominal rate, override FeedHold, don't save as
LastFRO

Regards
TK

On 2018-02-12 11:31, kn6za@... [DynoMotion] wrote:
> I think you can do a negative value in the FRO variable with:
>
> DoPCFloat(PC_COMM_SET_FRO,FRO);
>
> machine will move backwards along the path. There may be other methods
> as well.
>
void SetFROTemp(float FRO); // Temporarily change from current to the
specified FRO using a nominal rate, override FeedHold, don't save as
LastFRO

Thank alot Tom. This should do the job.
I try it and let you know.

Sorry for the bad intel guys.

No worries.  Thank you for taking the time for a suggestion to try.

Regards
TK

 

Sorry for the bad intel guys.

   Andrew

I test it today and worked fine.
Thank you Tom, again for your great support.