Problem with Resend:0 through Pronterface

tamian

Hi all!
I built a CNC machine with Repetier-Firmware on board. I have experience with 3D printers, so I chose Pronterface as my GUI host.
I get my machine up and running, but there is a problem with Pronterface or Repetier - it shows error in Pronterface console: "Resend:0" when CNC finishes work. It happens every time. In result, I can't no longer drive machine by xyz controls, manual g-code sending also doesn't works. In this situation, only solution is to disconnect, reboot Arduino and connect again. I looked into source code of Pronterface and Repetier and I think that it's possible to remove from firmware function which returns "Resend:0", but I really don't want to do it.
Is there any other way to solve that problem? Has anyone had a similar situation?

Repetier

What is the last line? Seems like it is line number 0 but that is unlikely.

Does repetier-host have the same problem?

tamian

Last line in my gcode? It looks like "N3281 M02". I'm pretty sure that line number 0 appears only once, at the beginning.

Surprisingly, Repetier-Host haven't the same problem. But the difference is that Repetier-Host don't show any additional informations in console (like "ok 0" in Pronterface), just plain gcode lines which are send to CNC.

Repetier

The host does, but has disabled showing normally useless information so you need to enable ACK/Commands to see all these lines as well. Normally you only see special responses from firmware in log (which might be hidden in easy mode as well).

I hope your gcode does not contain the lin enumbers but only the output from host/pronterface.

tamian

It's unlikely that Repetier-Host will show something like that, because after sending g-code file by Repetier and finalize cutting, I can drive machine by Repetier-Host control GUI, but I will check it asap (I don't have machine in my garage right now) to be 100% sure.

I don't know exactly what do you mean by "does not contain the line numbers but only the output from host/pronterface". If you talk about "Nx" where x is started from 0 and incremented by each line before every g-code command, so yes, I have it in my gcodes. But I also tried without it (most of the time) and result is the same. Is it what you meant?

Repetier

Thats what I meant. Host adds N line numbers so original must not contain line numbers. That would confuse the printer and can easily cause errors.

tamian

Okay, I took me a long time, but I tested it out. Both options. Gcode with manually added N line numbers and without it. Repetier prints ok, Pronterface don't. After finish Repetier continues work and send "ok x" where x is incremented each time, but Pronterface is forcing to send "ok 0" even if printing is done.

So what can I do with it? Is there any option to "repair" Pronterface or I have to modify Repetier-Firmware?

Repetier

I don't know pronterface well enough to say what it is doing. Since it normally works the answer must be in the gcode around the error that gets send.

tamian

Okay, thank you for all. Do you know someone who know Pronterface on level of source code?
Anyway, thank you very much for whole help!

Repetier

No I don't know who knows Pronterface, sorry.