Forward / Reverse buttons

Moderators: TomKerekes, dynomotion

Post Reply
marker
Posts: 3
Joined: Fri Jan 18, 2019 8:00 am

Forward / Reverse buttons

Post by marker » Fri Jan 18, 2019 9:09 am

Hello

On the main KmotionCNC screen there is a button "FEED HOLD".
When you press it, the G code stops running and 2 additional Forward / Reverse buttons appear.

I need to manage these commands from the C program.

To stop / start, I use the command:

if (ReadBit (33)) // Watch an external input switch
{
StopCoordinatedMotion (); // feedhold
}
else ResumeCoordinatedMotion (); // resume feedhold


Question: how to manage forward / reverse commands


There is a command to control the steps in the G code:
DoPC (PC_COMM_SINGLE_STEP);

But it works only forward, how to implement the reverse?

Thanks for answers. (Sorry for my English)

User avatar
TomKerekes
Posts: 273
Joined: Mon Dec 04, 2017 1:49 am

Re: Forward / Reverse buttons

Post by TomKerekes » Tue Jan 22, 2019 5:17 pm

Hello marker,

Sorry I somehow missed this.

You can command forward and reverse motion within KFLOP along a path by calling the function:

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

With something like SetFROTemp(0.2); or SetFROTemp(-0.2);

Regarding DoPC (PC_COMM_SINGLE_STEP); - there isn't any command for single stepping GCode in reverse. However when reverse feeding the GCode Line number that created the motion should update automatically.
Regards,

Tom Kerekes
Dynomotion, Inc.

marker
Posts: 3
Joined: Fri Jan 18, 2019 8:00 am

Re: Forward / Reverse buttons

Post by marker » Wed Jan 23, 2019 5:49 am

Thanks for the answer

Works great

Post Reply