Ethercat protocol not responding

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31 Jan 2023 06:15 #263302 by akg1904
Hi,

I've been trying to get linuxcnc working via the ethercat protocol but am a little stuck.

I've installed Ethercat following the guide linked below:
forum.linuxcnc.org/ethercat/45336-etherc...step-by-step?start=0

I believe I was successful in installing it because I got the following in terminal:

Command:
"halcmd show pin lcec"

Response:
Component Pins:
Owner   Type  Dir         Value  Name
     4  u32   OUT    0x00000001  lcec.conf.master-count
     4  u32   OUT    0x00000001  lcec.conf.slave-count


Command:
"ethercat cstruct"

Response:
/* Master 0, Slave 0
 * Vendor ID:       0x00000539
 * Product code:    0x02200301
 * Revision number: 0x00080019
 */

ec_pdo_entry_info_t slave_0_pdo_entries = {
    {0x6040, 0x00, 16},
    {0x607a, 0x00, 32},
    {0x6041, 0x00, 16},
    {0x6064, 0x00, 32},
};

ec_pdo_info_t slave_0_pdos = {
    {0x1601, 2, slave_0_pdo_entries + 0}, /* 2nd Receive PDO mapping */
    {0x1a01, 2, slave_0_pdo_entries + 2}, /* 2nd Transmit PDO mapping */
};

ec_sync_info_t slave_0_syncs = {
    {0, EC_DIR_OUTPUT, 0, NULL, EC_WD_DISABLE},
    {1, EC_DIR_INPUT, 0, NULL, EC_WD_DISABLE},
    {2, EC_DIR_OUTPUT, 1, slave_0_pdos + 0, EC_WD_ENABLE},
    {3, EC_DIR_INPUT, 1, slave_0_pdos + 1, EC_WD_DISABLE},
    {0xff}
};


So I proceeded to run linuxcnc (axis GUI) all went well with no error messages in terminal.
However when I tried to jog my servo motor, it didn't move.
I moved the motor by hand but there was no difference in the DRO reading on the display either.

Now I don't know what I have done wrong...
I have checked my wiring and all seems fine so I'm left thinking it has something to do with the configuration or integration.

I have attached my ini, hal and xml files for reference.

ini
 

File Attachment:

File Name: EC_2023-01-31.ini
File Size:3 KB


xml
 

File Attachment:

File Name: ethercat-c...30-2.xml
File Size:5 KB


hal

File Attachment:

File Name: pre-gui_20...1-30.hal
File Size:6 KB

File Attachment:

File Name: post-gui_2...1-30.hal
File Size:0 KB


Has anyone faced a similar problem before or does anyone have any ideas of what might be going wrong???

Thanks in advance,
Abhishek
Attachments:

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31 Jan 2023 07:52 #263309 by rodw
please copy output from
ethercat slaves
The following user(s) said Thank You: xwq

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31 Jan 2023 08:47 #263316 by akg1904
Hi Rodw,

Thanks once again for replying.
I think you want to see the Response of command "ethercat slaves"

Command:
"ethercat slaves"

Response:
0  1:0  PREOP  +  0x00000539:0x02200301


Command:
"ethercat slaves  -v"

Response:
=== Master 0, Slave 0 ===
Alias: 1
Device: Main
State: PREOP
Flag: +
Identity:
  Vendor Id:       0x00000539
  Product code:    0x02200301
  Revision number: 0x00080019
  Serial number:   0x00000000
DL information:
  FMMU bit operation: yes
  Distributed clocks: yes, 32 bit
  DC system time transmission delay: 0 ns
Port  Type  Link  Loop    Signal  NextSlave  RxTime [ns]  Diff [ns]   NextDc [ns]
   0  MII   up    open    yes             -    518943038           0           0
   1  MII   down  closed  no              -            -           -           -
   2  N/A   down  closed  no              -            -           -           -
   3  N/A   down  closed  no              -            -           -           -
Mailboxes:
  Bootstrap RX: 0x1000/128, TX: 0x1080/128
  Standard  RX: 0x1000/128, TX: 0x1080/128
  Supported protocols: EoE, CoE, FoE
General:
  Group:
  Image name:
  Order number:
  Device name:
  CoE details:
    Enable SDO: yes
    Enable SDO Info: yes
    Enable PDO Assign: yes
    Enable PDO Configuration: yes
    Enable Upload at startup: no
    Enable SDO complete access: no
  Flags:
    Enable SafeOp: no
    Enable notLRW: yes
  Current consumption: 0 mA

I hope with this we might figure out the error

Regards
Abhishek

 

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31 Jan 2023 09:25 #263321 by rodw
run linuxcnc from the command line and look for errors.
With linuxcnc running, in a new console window type ethercat slaves again and share. It should show a different status
 

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31 Jan 2023 10:26 #263333 by akg1904
Hi Rodw,

I ran linuxcnc from the command line but there was no error which I could Identify.


Command:
"ethercat slaves"

Response:
0  1:0  PREOP  E  0x00000539:0x02200301


Command:
"ethercat slaves  -v"

Response:
=== Master 0, Slave 0 ===
Alias: 1
Device: Main
State: PREOP
Flag: E
Identity:
  Vendor Id:       0x00000539
  Product code:    0x02200301
  Revision number: 0x00080019
  Serial number:   0x00000000
DL information:
  FMMU bit operation: yes
  Distributed clocks: yes, 32 bit
  DC system time transmission delay: 0 ns
Port  Type  Link  Loop    Signal  NextSlave  RxTime [ns]  Diff [ns]   NextDc [ns]
   0  MII   up    open    yes             -    518943038           0           0
   1  MII   down  closed  no              -            -           -           -
   2  N/A   down  closed  no              -            -           -           -
   3  N/A   down  closed  no              -            -           -           -
Mailboxes:
  Bootstrap RX: 0x1000/128, TX: 0x1080/128
  Standard  RX: 0x1000/128, TX: 0x1080/128
  Supported protocols: EoE, CoE, FoE
General:
  Group:
  Image name:
  Order number:
  Device name:
  CoE details:
    Enable SDO: yes
    Enable SDO Info: yes
    Enable PDO Assign: yes
    Enable PDO Configuration: yes
    Enable Upload at startup: no
    Enable SDO complete access: no
  Flags:
    Enable SafeOp: no
    Enable notLRW: yes
  Current consumption: 0 mA

Note: I have directly connected the servo drive to my PC without any Bus-Coupler like Bechkoff(EK 1100), etc...
Could this be causing any problems?

Regards
Abhishek


 

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31 Jan 2023 10:51 #263334 by rodw
I think the slave state should change once linuxcnc is opened.
I can't help further.
The following user(s) said Thank You: akg1904

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31 Jan 2023 12:41 #263345 by db1981
check the dmesg output after starting linuxcnc, if there is nothing obivous set debug level to 1 "ethercat debug 1" and check again

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31 Jan 2023 13:41 #263356 by akg1904
Thanks Rodw for all your help, I really appreciate it.

I did a little bit of research and by typing the following command I got some response which give more detail information

Command:
sudo dmesg

Response:
[    5.627340] EtherCAT: Master driver 1.6.0-rc1 unknown
[    5.627452] EtherCAT: 1 master waiting for devices.
[    5.635705] ec_generic: EtherCAT master generic Ethernet device module 1.6.0-rc1 unknown
[    5.635714] EtherCAT: Accepting 1C:1B:0D:12:9F:8F as main device for master 0.
[    5.635726] ec_generic: Binding socket to interface 2 (enp1s0).
[    5.666467] EtherCAT 0: Starting EtherCAT-IDLE thread.
[    5.666668] EtherCAT 0: Link state of ecm0 changed to UP.
[    5.674399] EtherCAT WARNING 0: 1 datagram TIMED OUT!
[    6.182096] IPv6: ADDRCONF(NETDEV_UP): enp1s0: link is not ready
[    6.183690] r8169 0000:01:00.0: firmware: failed to load rtl_nic/rtl8168g-2.fw (-2)
[    6.184341] r8169 0000:01:00.0: Direct firmware load for rtl_nic/rtl8168g-2.fw failed with error -2
[    6.184344] r8169 0000:01:00.0 enp1s0: unable to load firmware patch rtl_nic/rtl8168g-2.fw (-2)
[    6.184571] Generic PHY r8169-100:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=r8169-100:00, irq=IGNORE)
[    6.190351] EtherCAT 0: Link state of ecm0 changed to DOWN.
[    6.284799] IPv6: ADDRCONF(NETDEV_UP): enp1s0: link is not ready
[    6.317610] IPv6: ADDRCONF(NETDEV_UP): enx006f000126bb: link is not ready
[    6.319923] IPv6: ADDRCONF(NETDEV_UP): enx006f000126bb: link is not ready
[    6.668969] IPv6: ADDRCONF(NETDEV_CHANGE): enx006f000126bb: link becomes ready
[    6.677326] asix 1-8:1.0 enx006f000126bb: link up, 100Mbps, full-duplex, lpa 0xC5E1
[    6.977853] broken atomic modeset userspace detected, disabling atomic
[    7.917529] r8169 0000:01:00.0 enp1s0: Link is Up - 100Mbps/Full - flow control off
[    7.917548] IPv6: ADDRCONF(NETDEV_CHANGE): enp1s0: link becomes ready
[    7.922397] EtherCAT 0: Link state of ecm0 changed to UP.
[    7.930401] EtherCAT 0: 1 slave(s) responding on main device.
[    7.930406] EtherCAT 0: Slave states on main device: PREOP.
[    7.930502] EtherCAT 0: Scanning bus.
[    7.940800] EtherCAT 0: Bus scanning completed in 8 ms.
[    7.940803] EtherCAT 0: Using slave 0 as DC reference clock.
[    8.493519] fuse init (API version 7.27)
[   11.220067] rfkill: input handler disabled
[  260.551951] EtherCAT: Requesting master 0...
[  260.551953] EtherCAT: Successfully requested master 0.
[  260.552139] EtherCAT 0: Domain0: Logical address 0x00000000, 46 byte, expected working counter 3.
[  260.552141] EtherCAT 0:   Datagram domain0-0-main: Logical offset 0x00000000, 46 byte, type LRW at 000000006b7f61bb.
[  260.552148] EtherCAT 0: Master thread exited.
[  260.552149] EtherCAT 0: Starting EtherCAT-OP thread.
[  260.552170] EtherCAT WARNING 0: 61 datagrams TIMED OUT!
[  260.811521] EtherCAT ERROR 0-0: SDO download 0x1C12:00 (1 bytes) aborted.
[  260.811525] EtherCAT ERROR 0-0: SDO abort message 0x06040041: "The object cannot be mapped into the PDO".
[  260.811526] EtherCAT WARNING 0-0: Failed to set number of assigned PDOs of SM2.
[  260.811527] EtherCAT WARNING 0-0: Currently assigned PDOs: (none). PDOs to assign: 0x1600
[  260.811529] EtherCAT WARNING 0-0: PDO configuration failed.
[  260.820520] EtherCAT ERROR 0-0: Failed to set SAFEOP state, slave refused state change (PREOP + ERROR).
[  260.821519] EtherCAT ERROR 0-0: AL status message 0x001E: "Invalid input configuration".
[  260.823519] EtherCAT 0-0: Acknowledged state PREOP.

As I can see from the info that the slave is refusing to change the state and I can't figure it out

If someone got this type of problem kindly help me out .

Thanks and Regards
Abhishek

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31 Jan 2023 13:44 - 31 Jan 2023 14:13 #263357 by akg1904
Hi db1981,

After setting debug level to 1 using "ethercat debug 1" in terminal

I did dmesg and I got response which I have attached in text file below:


 

File Attachment:

File Name: dmesg_message.doc
File Size:102 KB



I can see some changes but cannot figure out the cause of error

Thanks and Regards
Abhishek
Attachments:
Last edit: 31 Jan 2023 14:13 by akg1904.

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31 Jan 2023 14:45 #263363 by db1981
one or more register from your slave can not be mapped to pdo, because the slave doesn'T support this.

what type of slave is this?

please post output from "ethercat pdos"

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