Problems with Lichuan Ethercat servo drive

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12 Apr 2024 20:07 #298112 by trisa25
Hello,

I have ordered a Lichuan LC10E servo drive with motor for testing.

After following Rodw's guide I have successfully installed all needed software components. Ethercat slave also lists my drive speccifically in PREOP mode. I cannot get the drive to go into OP mode with opening lcnc nor with manually toggling the state with ethercat states -p0 OP command.

Any recommendations on what I can check first?
Below are my configuration files.

Kind regards,
Jan

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12 Apr 2024 20:26 #298115 by rodw
Try this.
Looks like your
# joint signals for motion
are in the wrong place
move after
# ethercat to cia402 driver

 

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13 Apr 2024 12:57 #298163 by trisa25
Thank you, will try tommorow and report back.

Kind regards,
Jan

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14 Apr 2024 19:47 #298252 by trisa25
Sadly still no progress :(
Also tried some other different orders of code with no success.

Jan
 

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16 Apr 2024 09:24 #298349 by 0x2102
Open a terminal and run "sudo dmesg -wH" to monitor for EtherCAT errors.

Start your machine and post what it complains about.
The following user(s) said Thank You: besriworld

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16 Apr 2024 17:23 #298390 by trisa25
Here is the part that you probably need.
Attached file is the whole dmesg output.

Does this mean that this servo drives sii is not correctly configured?

I have also tested and can switch the drive between INIT and PREOP states.
[  +0.028027] EtherCAT 0: 1 slave(s) responding on main device.
[  +0.000006] EtherCAT 0: Slave states on main device: INIT.
[  +0.000528] EtherCAT 0: Scanning bus.
[  +0.401850] EtherCAT ERROR 0-0: Invalid data size 2 at uploading SDO 0x1703:01.
[  +0.000004] EtherCAT ERROR 0-0: Failed to read mapped PDO entries for PDO 0x1703.
[  +0.024048] EtherCAT ERROR 0-0: Invalid data size 1 at uploading SDO 0x1B03:09.
[  +0.000002] EtherCAT ERROR 0-0: Failed to read mapped PDO entries for PDO 0x1B03.
[  +0.000002] EtherCAT 0: Bus scanning completed in 424 ms.
[  +0.000001] EtherCAT 0: Using slave 0 as DC reference clock.
[  +0.005533] EtherCAT 0: Slave states on main device: PREOP.
[Apr16 18:00] EtherCAT: Requesting master 0...
[  +0.000005] EtherCAT: Successfully requested master 0.
[  +0.000143] EtherCAT 0: Domain0: Logical address 0x00000000, 196 byte, expected working counter 1.
[  +0.000002] EtherCAT 0:   Datagram domain0-0-main: Logical offset 0x00000000, 196 byte, type LWR.
[  +0.000012] EtherCAT 0: Master thread exited.
[  +0.000002] EtherCAT 0: Starting EtherCAT-OP thread.
[  +0.000036] EtherCAT WARNING 0: 2 datagrams TIMED OUT!
[  +0.087224] EtherCAT ERROR 0-0: SDO upload 0x1601:00 aborted.
[  +0.000006] EtherCAT ERROR 0-0: SDO abort message 0x06020000: "This object does not exist in the object directory".
[  +0.000002] EtherCAT ERROR 0-0: Failed to read number of mapped PDO entries.
[  +0.000001] EtherCAT WARNING 0-0: Failed to read PDO entries for PDO 0x1601.
[  +0.004992] EtherCAT ERROR 0-0: SDO download 0x1601:00 (1 bytes) aborted.
[  +0.000003] EtherCAT ERROR 0-0: SDO abort message 0x06020000: "This object does not exist in the object directory".
[  +0.000001] EtherCAT WARNING 0-0: Failed to clear PDO mapping.
[  +0.000001] EtherCAT WARNING 0-0: Currently mapped PDO entries: (none). Entries to map: 0x6040:00/16 0x6060:00/8 0x607A:00/32
[  +0.000005] EtherCAT WARNING 0-0: Failed to configure mapping of PDO 0x1601.
[  +5.056991] EtherCAT WARNING 0-0: Slave did not sync after 5000 ms.
[  +0.004002] EtherCAT ERROR 0-0: Failed to set SAFEOP state, slave refused state change (PREOP + ERROR).
[  +0.000996] EtherCAT ERROR 0-0: AL status message 0x001D: "Invalid output configuration".
[  +0.002000] EtherCAT 0-0: Acknowledged state PREOP.
[ +13.761889] EtherCAT 0: Master thread exited.
[  +0.000023] EtherCAT 0: Starting EtherCAT-IDLE thread.
[  +0.000032] EtherCAT ERROR 0-0: Failed to receive AL state datagram: Datagram initialized.
[  +0.000011] EtherCAT 0: Releasing master...
[  +0.000001] EtherCAT 0: Released.
[  +0.358490] EtherCAT WARNING: Datagram 0000000040ce6834 (master-fsm) was SKIPPED 1 time.
Attachments:

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16 Apr 2024 17:53 #298393 by trisa25
I have now edited the ethercat conf  first pdo idx to 1702 and second pdo idx to 1b02 and now i can change the servo state to safeop but still no other state.I can not upload servo manual because it is too large.

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17 Apr 2024 19:44 #298484 by trisa25
After a bit of searching I think that sii eeprom is not configured correctly on this drive.

I will ask the manufacturer for xml file in hopes of making it work.

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18 Apr 2024 14:15 #298559 by Sandro
Hi Jan

I have the same drive on order and hope I can do some testing soon. Very interested in the topic and your progress.

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19 Apr 2024 20:03 #298665 by trisa25
Good news the motor is running!!

Turns out if you try reading an ethercat adress that the drive doesn`t have, nothing works.

I have attached linuxcnc configuration files intended for testing only and LC10E xml (ESI) file if anyone wants to tinker. 
Servo drive manual is available on link: drive.google.com/file/d/1qAFw_8SHKfR-JmR...Nqz/view?usp=sharing

Next on: try to implement higher frequency velocity mode.
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