Ethercat HAL driver
05 Nov 2020 05:47 #188374
by CORBETT
Replied by CORBETT on topic Ethercat HAL driver
@JanMrlth,
"Is there a place/repository to share config files?"
The only place that I am aware of is here on the LinuxCNC forum or at GitHub. "Tommylight" may know somewhere else, but for LCNC EtherCAT I would say only here and GitHub. If you go to Sasha Ittners Git page, there are a few example configs, but not a repository.
"I am gradually working my way forward in this thread. Can someone recommend a website/tutorials where all the knowledge is a bit more condensed? Browsing through 100s of posts does not seem to be the most effectiv way to get information
"
This is one problem since it is open source and everyone here is volunteers. There is not really a good specific place to just go read one page after another to figure things out. The closest to that would be reading the integrator manual and the users manual. Over the years I have had the same problem you are facing which is trying to piece together multiple post to answer one question. Plus some post are really old and pertain to that version of LCNC and may not even be relevant to the version you may be using. This can be a huge problem at times when you can't find the answer you need for your version.
The one thing that is positive and helps is there is super dedicated people on here such as Tommylight, PCW, andypugh, and few others not mentioned that really know what they are doing. There are many others that can help, but only a few that can help with EtherCAT... Chimeno and Grotius are the main guy's to get with on EtherCAT as they have helped me in the past with problems.
Hope this helps.
Robert
"Is there a place/repository to share config files?"
The only place that I am aware of is here on the LinuxCNC forum or at GitHub. "Tommylight" may know somewhere else, but for LCNC EtherCAT I would say only here and GitHub. If you go to Sasha Ittners Git page, there are a few example configs, but not a repository.
"I am gradually working my way forward in this thread. Can someone recommend a website/tutorials where all the knowledge is a bit more condensed? Browsing through 100s of posts does not seem to be the most effectiv way to get information
"This is one problem since it is open source and everyone here is volunteers. There is not really a good specific place to just go read one page after another to figure things out. The closest to that would be reading the integrator manual and the users manual. Over the years I have had the same problem you are facing which is trying to piece together multiple post to answer one question. Plus some post are really old and pertain to that version of LCNC and may not even be relevant to the version you may be using. This can be a huge problem at times when you can't find the answer you need for your version.
The one thing that is positive and helps is there is super dedicated people on here such as Tommylight, PCW, andypugh, and few others not mentioned that really know what they are doing. There are many others that can help, but only a few that can help with EtherCAT... Chimeno and Grotius are the main guy's to get with on EtherCAT as they have helped me in the past with problems.
Hope this helps.
Robert
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07 Nov 2020 22:18 #188622
by Grotius
Replied by Grotius on topic Ethercat HAL driver
Hi,
I remember a document where the timing details where provided.
You see, it's almost equal between userspace and kernelspace.
It's true you can not mix rtai (.ko) with the generic (.so) driver.
How much slower is the generic driver?
I think it's 2-5 nanosec slower if you take the 4 ecrt steps together.
I remember a document where the timing details where provided.
You see, it's almost equal between userspace and kernelspace.
It's true you can not mix rtai (.ko) with the generic (.so) driver.
How much slower is the generic driver?
I think it's 2-5 nanosec slower if you take the 4 ecrt steps together.
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10 Nov 2020 16:01 - 10 Nov 2020 16:03 #188890
by Grotius
Replied by Grotius on topic Ethercat HAL driver
Hi Jc2ktr,
Is there anywhere a Tutorial how to add Ethercat devices.
No not really.
To all users.
It is time to write an application that writes the xml file automaticly for the lcec driver.
This will save everyone over here lot's of time. For a few, it can saves weeks.
I mention in general, that the application's at linuxcnc are becoming more complex and advanched over time.
I have experience with reading and writing xml files in c++. It's really easy to do that.
But i need help from you guy's to make the software details.
Who is for making the software and can help provide the ethercat info for the different servo drives?
I have non experience with twincat. Otherwise maybe i had the logic to write some code, but now it's that we can let the software
do a terminal command, then retrieve a slave list. At that moment we have to generate the xml file.
Is there anywhere a Tutorial how to add Ethercat devices.
No not really.
To all users.
It is time to write an application that writes the xml file automaticly for the lcec driver.
This will save everyone over here lot's of time. For a few, it can saves weeks.
I mention in general, that the application's at linuxcnc are becoming more complex and advanched over time.
I have experience with reading and writing xml files in c++. It's really easy to do that.
But i need help from you guy's to make the software details.
Who is for making the software and can help provide the ethercat info for the different servo drives?
I have non experience with twincat. Otherwise maybe i had the logic to write some code, but now it's that we can let the software
do a terminal command, then retrieve a slave list. At that moment we have to generate the xml file.
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