Problems with Lichuan Ethercat servo drive
- ihavenofish
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23 May 2025 00:11 - 23 May 2025 00:12 #328951
by ihavenofish
Replied by ihavenofish on topic Problems with Lichuan Ethercat servo drive
ooh, nice. you think you can help me config my ethercat setup. i have different drives, but im stuck at the "how do i even make ethercat work" part. 
i looked through your files a bit, but of course they dont start cause i got no mesa card in mine.

i looked through your files a bit, but of course they dont start cause i got no mesa card in mine.
Last edit: 23 May 2025 00:12 by ihavenofish.
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- JohnW
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25 May 2025 11:37 #329102
by JohnW
Replied by JohnW on topic Problems with Lichuan Ethercat servo drive
I'm new to this and was asking Chat GPT what the problems were with Lichuan drives. It says EtherCat Master stacks on Linux CNC expect drives to follow CiQ 402 correctly, but Lichuan drives lack full state machine compliance, and incorrectly transition from Ready to Switch ON to Operation Enabled, etc. Windows stacks are more tolerant of violations. So by plugging the drive in after they have done an illegal transition, Linux CNC stacks remain happy.
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- Grotius
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26 May 2025 08:10 #329148
by Grotius
Replied by Grotius on topic Problems with Lichuan Ethercat servo drive
@John,
Maybe that's the case, but this is solvable.
I am writing some new code. We are free to change the state machine transitions for Lichuan.
Here you can see how to set states. In fact it's just a matter off setting a combination off bits in a sequence.
Currently i am waiting for a new servo drive, so my code is halted. I dont have a Lichuan here, so i can not write code for it
to solve any problems.
Maybe that's the case, but this is solvable.
I am writing some new code. We are free to change the state machine transitions for Lichuan.
Here you can see how to set states. In fact it's just a matter off setting a combination off bits in a sequence.
Currently i am waiting for a new servo drive, so my code is halted. I dont have a Lichuan here, so i can not write code for it
to solve any problems.
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- Hakan
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26 May 2025 09:38 #329151
by Hakan
Replied by Hakan on topic Problems with Lichuan Ethercat servo drive
I guess ChatGPT looked at this thread to come to that answer.
I read more than half of this thread yesterday. Some 8 pages or so in there are many working configurations, and people with success.
I read more than half of this thread yesterday. Some 8 pages or so in there are many working configurations, and people with success.
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- ihavenofish
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26 May 2025 16:42 #329169
by ihavenofish
Replied by ihavenofish on topic Problems with Lichuan Ethercat servo drive
Yeah this thread is really the only reference. The first post maybe needs a consolidation of "this is what we do".
I'm curious about tuning these things now that we know they "work". Would like to know how arduous or easy that turns out to be.
I'm curious about tuning these things now that we know they "work". Would like to know how arduous or easy that turns out to be.
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