A(4th) and S (spindle) works on one same driver, possible?

in that case, I wouldn't dare to take it, there might be a lot of backlash...and it's certainly difficult to fit some new ballscrews. I need a small one mill for precise work, but in the cnc variant. Thanks a lot for the info

good evening, congratulations for your project, it is very successful, which version of linux do you use? The 2.8.4? and could you share your configuration, it would be useful for my project, thank you again, your video is very good 

good evening Jean. I followed the installation instructions from JT (debian 12 bookworm).. then I installed the latest version available at the time from this link packages.debian.org/source/unstable/linuxcnc, since I use mesa 7i96s, it supports 2.8. 4. I will share the configuration tomorrow, but there is nothing special in it except 2mpg wheels that work like on a real lathe for x and z ..and this touch screen version of Axis gui..I will forward the link. This option to use the A axis and Spindle from the same driver has no settings in HaL, except for one output that on the servo driver changes the mode to command m64 and m65. if you have a similar Chinese servo motor I can explain how I connected it. My project can be followed on post #250685. what kind of machine are you making?

thank you, I would like to do an axis c tour, there are several options from what I could understand, yours, the angle offset (eoffset_per_angle) and orient, I test that on a Chinese bob and after, I pass on the tandem 5i25 / 7i76 as soon as the configuration will work, on the X Y axes, they are AASD -15 and vdf ALTIVAR (siemens) on axis c / spindel

Okay, I'm using the letter A because my Cam wood program is designed to work as 4th.axis. in my case for the Spindle drive motor, there is an ASSD servo motor. and its driver has the possibility of three modes of operation, position (step/dir) speed and torque... or a combination of position/speed, position/torque. at the input of the driver there is a pin that changes the operating mode, then that pin is simply defined and via the M command in linux it changes the position or speed (spindle). I only need the spindle for cutting pieces with a knife, I mostly use the headstock as the A axis. in your case, if I understood correctly, you have a classic high-frequency motor and that Siemens VFD (what model?)I assume that it only has speed mode as a control, in that case you should connect the encoder to 7i76, but I had no experience with those orient spindle settings in hal, i believe someone from the forum did. Another option that I had as a possibility at the beginning of my project is to put a classic spindle motor as a headstock, than to add another stepper motor that would connect to the spindle via a pneumatic cylinder and when spindle stops, drive the spindle like a classic rotary axis.I also think that you can't do anything with the bob card, it doesn't have an input for an encoder. You can describe the machine a little better (with a photos), that would help me and others to give better advice.

bonjour, voici une video

congratulations on the project, as I see a lot has been done, I just have a couple of dilemmas, even if you manage to make this asynchronous motor work in position mode, you would have to somehow lock it in that position, with a mechanical brake or whatever. since the VFD does not have a position mode, I guess...I would personally try it by taking an additional card that converts a digital to analog signal and has an encoder reading. something similar to this one on the link, I have 3 of them that work well, but I retrofit that machine to mach3 (I believe that linuxcnc is the same)... and then make a relay board and make some subroutine to remap m codes that will change, switch the analog signal to the VFD so that it sends the signal from the bob card for the S command, and also sends the analog signal via the relay board and this card as step/dir to analog for C command. I can't think of anything smarter at the moment Take a look to this card here www.audiohms.com/en/cnc-electronics-prod...otor-drive-dcs-100-a

I tried to find it on the site, but I couldn't