DSP "write error !" + Rotary axis

[ctoutmoi]

Hello,
I have a problem. I can not write in the parameters of the machine. I can read the settings but when I write, it says, "write error!". He does wonder even more code. I rebooted the computer, turns off the DSP board. The error message appears in both CorelDraw and RLaserCut.
I'm lost. What can I do? Thanks.

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DSP V1.2 + silver panel.

[ctoutmoi]

I got to change the factory settings of the DSP card, but I feel I can not change certain settings.
The parameters are actually changed, but it still shows "Write error" I do not understand why?
In any case, the axes are working. It's a little galley to find the right set

I have a other question: It says in another post that the output U could not be used to drive a rotary axis. And las new version V2.00 of the DSP can not do? That's all very well contraigniant interchangeable with the Y axis rotary
In addition you must reprogram the factory settings. Not very practical. I may have missed something?

A small photo to motivate you

[twehr]

I have a other question: It says in another post that the output U could not be used to drive a rotary axis. And las new version V2.00 of the DSP can not do? That's all very well contraigniant interchangeable with the Y axis rotary
In addition you must reprogram the factory settings. Not very practical. I may have missed something?

Not sure I am understanding the question, but I'll answer what I think you are asking.

Although I had the v1.4 board, I did not use the rotary, so cannot speak to how it was supposed to be done. On v2.x, I believe you plug the rotary device into the y axis. IF you need to change settings, it is because the stepper on the rotary is not stepping exactly the same as the Y axis. So, yes, you will need to reset the settings. The good news is, it is simple to do. Just save two different versions of your settings - one for normal and one for rotary. Then load and write when you want to change. Chances are you are not going to be constantly changing back and forth, so the 20-30 seconds it takes is pretty trivial.


tim

[ctoutmoi]

Thank you for your reply. Why is not possible to use the U-axis for a rotating shaft? This could be easily controlled by the plugin coreldraw? A simple check box to say that the rotary axis is installed. This still allows the movement of the Y axis which would no longer be done by "hand". It could not took charge in the future DSP?

[Tech_Marco]

Usually you disconnected the 'Y axis' and hook it up to the Rotary. But you need to configure the machine parameters as the rotory motor and steps are not the same as the Y stepper.

[baccus61]

I have just set up the rotary axis on my laser a few days ago and I used the Y axis. It's a bit awkward to set up and get the pulses per rev sorted out and I still haven't quite got there yet as there is no documentation on how to do it and I just find myself stumbling around setting things to see what they do. I got it so that the drawing was twice the size of what I wanted and don't seem to be able to get it any better so I just stretch the drawing out until it fits. Not elegant but it does work. I need to work on it a bit more but I only had 2 hours to get it set up for the customer to do the job and 2 hours to do the engravings.

I have Version 2.0 board and PHCad.

I don't really see why anyone would want to use the U axis or even why it is there as you don't use the Y axis when doing rotary engraving anyway and current versions of software don't support Z axis 3D engraving. Only Gray scale engraving.

I made a 4 pin plug for my drivers and just unplug one axis and plug it into the other to swap them.
I used 2 pins for the DC power, as the drives I have are different voltages and types (2-4 phase and 5 phase), and the other 2 pins for the step and direction inputs.
I use Gecko drives for the X and Y axis and a Vexta 5 phase drive driving a 50:1 Harmonic drive for the rotary axis. Quite easy to set up really.

Rich.

[twehr]

I have just set up the rotary axis on my laser a few days ago and I used the Y axis. It's a bit awkward to set up and get the pulses per rev sorted out and I still haven't quite got there yet as there is no documentation on how to do it and I just find myself stumbling around setting things to see what they do. I got it so that the drawing was twice the size of what I wanted and don't seem to be able to get it any better so I just stretch the drawing out until it fits. Not elegant but it does work.

Rich,

Glad to see you are trying the rotary. I will be building a rotary attachment this spring. Right now I am building my new laser. Hope to complete by end of next week.

Are you using the Advance Functions - Rotate Engrave to set up your sizing for rotary work?

Obviously I have not tried it, but seems you should treat it the same as the Pulse Width Calculations we use for the other axes. Then just "enable" it when doing rotary work or "disable" it when doing standard x,y work.

[baccus61]

Hey Tim.
Yes, I set the advanced settings up as the circumference or diameter, I can't remember which right now and then I had to set the pulses per Dia or length in the setup section. You read then change the settings then save the file out as "rotary" (my naming convention )and then save the settings to update the hardware. The second time I tried this the settings would always revert to the old settings and would not change.
More playing with this will make it a bit easier to use I think.
I also had to set the lines per mm to about 0.8 or even 1mm to get it to engrave without going over the same line twice.
It's a bit of stuffing around but you will get the hang of it pretty quickly.
I use 2 different saved INI files. I just saved the first one as Bitmap or Vector for the 2D stuff and then save a different one as Rotary for the......you guessed it, Rotary axis.
Rich.

[Tech_Marco]

Hey guys:

I'm in China now! Let me know if you guys have any question that are still not being solved and I'll forward it to the tech see if they can come up solution. Or, if you guys want to get some parts or product, let me know and I'll try to find it.

By the way, I'll test a new card (lite version) in about a week. Once OK, then we will send it out for small scale production for second phrase testing. Once the result is satisfied, then I'll bring 100x unit home

Cheers!
Marco

[baccus61]

Hi Marco,
Could you get the guys to put a switch in the hardware or software to "go to origin" point. It would be good if you could set the laser head to a certain position then jog away from it to set something up or measure a part etc then push the button to "Go to the Origin" or 0,0 point without having to do a reset. Sometimes it's hard to get the laser back to the exact same point by manually jogging.
Other software has this feature and it's really handy.
Just my 2 cents worth.
Rich.
PS. I look forward to looking at your new stuff.

[ctoutmoi]

Hi Marco,

For me it would be great if it was possible to have an input on the DSP board to implement an 'auto focus'. Here a video and it must also be exactly the same hardware.
I also added: 4th axis ... with output U

Thanks a lot

[ctoutmoi]

Hi,
I still have a problem when I want to change the settings. Sweep parameters can not be changed and every time I get the message: "Write error"
It's really annoying, because the accelerations are not really good. Please help me



A photo of the setup for an overview
I managed to find a TLP281-4 (U29) and the limit of the Z axis and the reset function works now.

[ctoutmoi]

Marco, i hope you recovered from your accident.

Unfortunately I think that my problem cannot be solved at distance and I think that this card is defective. as this card is only less than one year and that I only made ​​my first test last week, I prefer returning it. My order was the No. 183310 dated 10.05.2010.
Thank you for your reply.

[Tech_Marco]

It's usually caused by 'static' noise from the power supply. You need to make sure that the USB cable is away from the high power cable (the CO2 power supply). Also, make sure you have good grounding!!