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  • shaying526
  • shaying526
04 Mar 2025 09:39
Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System was created by shaying526

Issue with OP Entry Delay and Failures in LinuxCNC + EtherCAT System

Category: EtherCAT

Dear forum members,Hello!I am currently setting up and running two systems based on LinuxCNC and EtherCAT, and I have encountered an issue regarding system startup performance. I hope to receive assistance and advice from you all.Overview of System Configurations:
  1. First System:
    • LinuxCNC Version: 2.8.4
    • EtherCAT Version: 1.5.2
    • I compiled the Linux kernel, Xenomai, LinuxCNC, and EtherCAT myself, and used a real-time network card driver.
    • This system's EtherCAT drives quickly enter the OP state within 1 second after startup.
  2. Second System:
    • LinuxCNC Version: 2.9.3
    • EtherCAT Version: 1.6.1
    • Installed according to the stickied post on the forum. "Ethercat installation from repositories - how to step by step"
    • This system takes a long time (over 10 seconds) for the EtherCAT drives to enter the OP state after starting LinuxCNC, and sometimes it fails. At this point, I have to close and reopen LinuxCNC, which may sometimes result in success, but it is not consistent.
Commonalities and Differences Eliminated:
  • Both systems are deployed on the same hardware platform, eliminating hardware differences.
  • The configuration files are almost identical.
Request for Assistance:Given that the first system performs normally, how can I resolve the startup delay issue on the second LinuxCNC system?
  • Is it worthwhile to try using different versions of EtherCAT?
  • If so, what are the specific steps I should follow to do so?
Thank you very much for your valuable time and assistance! I look forward to your replies.Best regards
  • meister
  • meister
04 Mar 2025 09:32
Replied by meister on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Category: Computers and Hardware

never trired OpenOCD, but you can send me the error mesage of the openfpgaloader.

with openocd you should make sure that it is written to the flash and not just to the ram, otherwise everything will be gone again after a restart

You can see whether it has worked by the flashing LED

btw, the default ip is '192.168.10.194'

the w5500 module has a little power led on the bottom, there is no jumper to power on/off this module.


not realy shure what you mean with the mapping,

the bob pins are mapped 1:1, if you need P17 (relais) on the BOB, you can use 'LEFT:P17' in your config.

 

if your BOB is connected to the other connector on the right, then you need to use 'RIGHT:P17'
 
  • gmr
  • gmr
04 Mar 2025 08:58
Mitsubishi Meldas Control and Motors was created by gmr

Mitsubishi Meldas Control and Motors

Category: Milling Machines

Hi All,

I have an old VMC that is based on the Mitsubishi Meldas controller and Mitsubishi motors. The machine is in good mechanical condition but the control has given up the ghost, so I plan to replace all the servo drives and do a new controller based on LinuxCNC. 

A few questions that I'd like some input on:
  • The machine has 3 phase 1kW, 3000 RPM motors on it for the X and Y axes and 2kW, 2000 RPM for the Z axis - they are Mitsubishi HA83  and Mitsubishi HA103 and have rotary encoders on them that means the original servo drives keep track of the absolute position. Does anyone have any thoughts on sticking with this motors or replacing them?  If replacing them, any suggestions for a good brand/family?
  • If I just replace the drives, then it seems that the Nidec/Control Techniques Unidrive M700 series might be a good choice? Any thoughts. Ideally I would power the drives directly from the 3 phase 415V supply (the machine currently has a transformer which delivers 200V to the drives).
  • On the control side, any suggestions as to which Mesa cards are well suited? Previously I have converted machines using the 7C81 and a Raspberry Pi and 5i25 and PC - I think this will need quite a lot of I/O so I'm thinking a PC based card this time.
Thanks,
Greg
 
  • kzali
  • kzali
04 Mar 2025 08:51
Replied by kzali on topic LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

Category: Computers and Hardware

Thanks for testing :)

ohh, i forgot a package in the installer:
apt-get install openfpgaloader

the BOB is added as module in the sample config, you can convert/split this into single plugins:
 [attachment=68228]split.png[/attachment]

The pins on the left and right connector are named P1->P17,
like on the DB26 connectors:
 [attachment=68229]pins.png[/attachment]

hope that helps.

T





 

Thanks for your incredible work
So I did install 
openfpgaloader but I still got an error.  However when I installed 
OpenOCD
 it flashed without errors.
So now I cannot ping 192.168.10.94  even though I have made the intel nuc 192.168.10.1 and put 8.8.8.8 as dns.  Trired 192.168.10.93 and gateway 192.168.10.1.  maybe the w55000 is not powered and wonder if there is a jumper on the tangoboard.  I will check the solders in the morning.  
The 5axis bob as setup in your default config is great for me however I am probably too silly to understand how the pins map out on the china bob, other than the steppers.  But I will leave that for more research.  
Than you
I would imagine that the attached image is somewhat of areference   
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