Re: [Emc-users] Force homed signal
I meant to say FED no feeded. Some verbs I forgot LOL. El lun, 30 ago 2021 a las 22:25, Leonardo Marsaglia () escribió: > Hi Marius, > > Are you driving your A axis with steppers or servos? What are you using as > the physical home switch? > > You can always fool the homing sequence at least into some extent. I > wanted to use servos in open loop but that was incompatible with homing > with index. So I bypassed the home switch for the final detection, and then > feeded the index pulse of the servos making LCNC believe it was the home > switch. May be you can implement something like that. > > El lun, 30 ago 2021 a las 9:23, Marius () > escribió: > >> Hi >> >> I am trying to create my own homing sequence on the A axis in Gmoccapy. >> Is there a way to set the "homed" signal to true once I have done my >> sequence? >> >> Regards >> >> Marius >> >> >> >> ___ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Force homed signal
Hi Marius, Are you driving your A axis with steppers or servos? What are you using as the physical home switch? You can always fool the homing sequence at least into some extent. I wanted to use servos in open loop but that was incompatible with homing with index. So I bypassed the home switch for the final detection, and then feeded the index pulse of the servos making LCNC believe it was the home switch. May be you can implement something like that. El lun, 30 ago 2021 a las 9:23, Marius () escribió: > Hi > > I am trying to create my own homing sequence on the A axis in Gmoccapy. > Is there a way to set the "homed" signal to true once I have done my > sequence? > > Regards > > Marius > > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Force homed signal
On Mon, Aug 30, 2021 at 3:23 PM Marius wrote: > I am trying to create my own homing sequence on the A axis in Gmoccapy. > Is there a way to set the "homed" signal to true once I have done my > sequence? i don't think so, i have added "set-homed" pins to joints for that purpose a few years ago to my own branch... but haven't submitted any patches so far /dmitry ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Python3
Hi, few weeks ago master changed to python3. This usually doesn't require any config changes, unless you use custom scripts or glade screens. I added some hints to the documentation: https://github.com/LinuxCNC/linuxcnc/commit/e74e8f60968aad9e6872069655df1de7166286a5 If you had to do anything else, please let me know. Rene ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] torque mode tuning yaskawa servo drives
I'm running Yaskawa SGDA drives on my Hurco and velocity control did not work well. To convert from velocity to torque I just reconfigured the drives and changed the LinuxCNC PID settings. There was no change to the HAL configuration apart from the PID values. Compared to velocity control you need to play around with the PID tuning a lot more. Halscope is pretty much essential then just keep playing with parameters while running a simple program that keeps moving back and forth at rapid speed. After a while you start to get a feel for how each affects the machine. Concentrate on P, I and D first. Once you have those set up feed forward can help improve transient response. Les On 30/08/2021 03:57, andrew beck wrote: hey everyone i am trying to tune my yaskawa sigma 1 series servo drive at the moment and thinking about using torque mode for tuning. currently the process is auto tune drives to a rigidity setting and then control drives with velocity reference in linuxcnc. I am not getting the most amazing control and any P value over 8 means the drive starts vibrating. i have tried a range of rigidity settings in servo drive i have never set up linuxcnc to control torque mode and just wondering if what the correct way is? is it the same as velocity control in terms of the pid loops and hal layer? or is there another whole level of stuff i need to do and i saw that i needed to speed up the servo thread a bit to get better performance if using torque mode anyway let me know your experiences regards Andrew ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] torque mode tuning yaskawa servo drives
Here is the like to a zip file. https://forum.linuxcnc.org/media/kunena/attachments/3190/2PID.zip It is a bit of a complex config with a number of little hal quirks. It is for a cnc router with two spindles and two parallel Z-axis. The two Z axis are set up as a Z and W, and much of the complexity of the config comes from a workaround to allow the W axis to be slaved to the Z axis (using custom M-codes) and have both move together using single Z-axis commands (so that the new tool planner look ahead will run on it.) It uses a Mesa 5i25/7i77 combo to send analog torque commands to some Technics servo drives. It will also help in a torque command set up to have a good computer capable of running a very fast servo-thread with low latency. (Not sure if the newer realtime kernels are capable of this. I'm running Wheezy on this machine.) Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -Original Message- From: Todd Zuercher Sent: Monday, August 30, 2021 8:28 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] torque mode tuning yaskawa servo drives [EXTERNAL EMAIL] Be sure links are safe. You can do it with one or two PID loops. Personally, with my machine, I found it significantly easier to tune with two loops and work better over a broader range of conditions. But others may have had better luck with one loop. I've posted copies of my config in the forums before. I'll have to dig up the link and post it here. Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -Original Message- From: andrew beck Sent: Monday, August 30, 2021 1:40 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] torque mode tuning yaskawa servo drives [EXTERNAL EMAIL] Be sure links are safe. just a quick follow up to make this question more general for everyone i really just want a working config from someone that has the torque mode servo stuff in linuxcnc working. i am getting confused if i need two nested PID loops or if i can just use the default velocity control setup On Mon, Aug 30, 2021 at 2:57 PM andrew beck wrote: > hey everyone > > i am trying to tune my yaskawa sigma 1 series servo drive at the > moment and thinking about using torque mode for tuning. > > currently the process is auto tune drives to a rigidity setting and > then control drives with velocity reference in linuxcnc. I am not > getting the most amazing control and any P value over 8 means the > drive starts vibrating. i have tried a range of rigidity settings in > servo drive > > i have never set up linuxcnc to control torque mode and just wondering > if what the correct way is? is it the same as velocity control in > terms of the pid loops and hal layer? or is there another whole level > of stuff i need to do > > and i saw that i needed to speed up the servo thread a bit to get > better performance if using torque mode > > anyway let me know your experiences > > regards > > Andrew > ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-usersdata=04%7C01%7Ctoddz%40pgrahamdunn.com%7Cc851967083f74ca0d3c608d96bb1a3c8%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637659232961912543%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000sdata=5xe3FBRZEFIXz1aH4x%2B8lMd%2FyyKxZRlmQqm7MBmMhQU%3Dreserved=0 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-usersdata=04%7C01%7Ctoddz%40pgrahamdunn.com%7Cc851967083f74ca0d3c608d96bb1a3c8%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637659232961912543%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000sdata=5xe3FBRZEFIXz1aH4x%2B8lMd%2FyyKxZRlmQqm7MBmMhQU%3Dreserved=0 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] torque mode tuning yaskawa servo drives
You can do it with one or two PID loops. Personally, with my machine, I found it significantly easier to tune with two loops and work better over a broader range of conditions. But others may have had better luck with one loop. I've posted copies of my config in the forums before. I'll have to dig up the link and post it here. Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -Original Message- From: andrew beck Sent: Monday, August 30, 2021 1:40 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] torque mode tuning yaskawa servo drives [EXTERNAL EMAIL] Be sure links are safe. just a quick follow up to make this question more general for everyone i really just want a working config from someone that has the torque mode servo stuff in linuxcnc working. i am getting confused if i need two nested PID loops or if i can just use the default velocity control setup On Mon, Aug 30, 2021 at 2:57 PM andrew beck wrote: > hey everyone > > i am trying to tune my yaskawa sigma 1 series servo drive at the > moment and thinking about using torque mode for tuning. > > currently the process is auto tune drives to a rigidity setting and > then control drives with velocity reference in linuxcnc. I am not > getting the most amazing control and any P value over 8 means the > drive starts vibrating. i have tried a range of rigidity settings in > servo drive > > i have never set up linuxcnc to control torque mode and just wondering > if what the correct way is? is it the same as velocity control in > terms of the pid loops and hal layer? or is there another whole level > of stuff i need to do > > and i saw that i needed to speed up the servo thread a bit to get > better performance if using torque mode > > anyway let me know your experiences > > regards > > Andrew > ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-usersdata=04%7C01%7Ctoddz%40pgrahamdunn.com%7Cf2a69a7e71d845d8b57b08d96b7a69d6%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637658995768242951%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000sdata=%2BzBZerFEpxlzX%2BE03043V5kbGJK3SLiaudCAJwTMMSc%3Dreserved=0 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Force homed signal
Hi I am trying to create my own homing sequence on the A axis in Gmoccapy. Is there a way to set the "homed" signal to true once I have done my sequence? Regards Marius ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
