LinuxCNC installation + 7I96S

OK, I've managed to get the motor moving. The two +/- buttons now move the motor, although I'd like to have an interface with arrows. (More user-friendly)

I'm using the default LinuxCNC configuration for my 7I96S card. I need to modify the parameters for my CNC machine. How can I do this to ensure that the changes are correct?



Thank you.

When I move the engines after a while, I get this error. 

I can't figure out what the problem is. The connection seems to be fine.

That indicates a Ethernet latency issue.

What does the command

sudo chrt 99 ping -i .001 -q -c 60000 192.168.1.121

report?

(the command will run for one minute then print statistics)
 

--- 192.168.1.121 ping stadistics ---
60000 packets transmitted, 60000 received, 0% packet loss, time 59998ms
rtt min/avg/max/mdev = 0.046/0.057/0.157/0.000 ms

I don't think it's a connection or latency problem.

I have disabled all BIOS performance options:

- C-States
- Intel Turbo Boost Technology
- EIST

And so on.

But the error keeps appearing.

I have tried everything. I am quite frustrated with Mesa and LinuxCNC. I knew it wouldn't be easy, but not this complicated!

Ethernet latency is the most common cause of the "Error finishing read"  fault

It basically means you have lost connection to the card, either because too
many read requests went unanswered within in the time limit  (with default settings
that time limit is 80% of the servo thread period and 5 successive requests must time out)

This may be caused by poor Ethernet latency or something more basic like power problems
on the FPGA card, host Ethernet power management issues, or Ethernet hardware problems.


What LEDs are illuminated on the 7I96S when you get the error?

Can you run this command after LinuxCNC gets the error and post the results here:

halcmd show all *.tmax

Also the CPU speed would help.

 

I get this:

halcmd show all *.tmax?
Loaded HAL Components:
ID Type Name PID State

Component Pins:
Owner Type Dir Value Name

Pin Aliases:
Alias Original Name

Signals:
Type Value Name (linked to)

Parameters:
Owner Type Dir Value Name

Parameter Aliases:
Alias Original Name

Exported Functions:
Owner CodeAddr Arg FP Users Name

Realtime Threads:
Period FP Name ( Time, Max-Time )


The LEDs on the board that light up:

CR6 --> Red
CR8 --> Yellow

CR11, CR12, and CR14 --> Green

My PC uses a Realtek RTL8111/8168/8411 network card, integrated into the Gigabyte motherboard.

Does this network card model cause problems with Mesa?

LinuxCNC must not have been running when you ran halcmd show all *.tmax
otherwise it should have show a set of parameters like:

Parameters:
Owner   Type  Dir         Value  Name
    33  s32   RW              0  hm2_7i76e.0.read-request.tmax
    33  s32   RW        1159140  hm2_7i76e.0.read.tmax
    33  s32   RW         270636  hm2_7i76e.0.write.tmax
    23  s32   RW          45260  motion-command-handler.tmax
    23  s32   RW         942716  motion-controller.tmax
    27  s32   RW         233832  pid.0.do-pid-calcs.tmax
    27  s32   RW         246480  pid.1.do-pid-calcs.tmax
    27  s32   RW          21700  pid.2.do-pid-calcs.tmax
    27  s32   RW          20144  pid.3.do-pid-calcs.tmax
    24  s32   RW        1564056  servo-thread.tmax


and yes, RealTek Network interfaces have issue with real time when using the stock
Linux kernel driver, the suggested  fix is to install the DKMS 8168 driver.

This affects any Ethernet or EtherCAT connected device that use the standard RealTek in kernel driver.

Ok, i see this:

halcmd show all *.tmax
Loaded HAL Components:
ID Type Name PID State

Component Pins:
Owner Type Dir Value Name

Pin Aliases:
Alias Original Name

Signals:
Type Value Name (linked to)

Parameters:
Owner Type Dir Value Name
33 s32 RW 1642 estop-latch.0.tmax
30 s32 RW 0 hm2_7i96s.0.read-request.tmax
30 s32 RW 2042995 hm2_7i96s.0.read.tmax
30 s32 RW 27254 hm2_7i96s.0.write.tmax
23 s32 RW 4820 motion-command-handler.tmax
23 s32 RW 18868 motion-controller.tmax
24 s32 RW 2081134 servo-thread.tmax

Parameter Aliases:
Alias Original Name

Exported Functions:
Owner CodeAddr Arg FP Users Name

Realtime Threads:
Period FP Name ( Time, Max-Time )

As for the controller, how do I install it?