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Hi all,

After countless revisions. managed to make it work.

PID settings are
P = 1
I = 0
D = 0
FF0 = 0
FF1 = 0
FF2 = 0
Scale : 1225

It was staring at my face the whole time. On a whim i just decided to 0 everything, and it worked!

Regards,
Kibin

Could you outline what kind of machine performance you are aiming for (ie how many axes, maximum axis velocities, toolchanger yes/no) ?

Hi everyone,I'm Farzad, an absolute beginner in CNC building. I'm currently in the process of choosing components to build a CNC machine for starting my own small business. I have a tight budget and want to make the most cost-effective decisions without sacrificing reliability.Here’s my situation:I’m planning to use Delta A2 servo motors with EtherCAT support.I’ve read that I’ll need an EtherCAT coupler such as the Beckhoff EK1100 to connect them to LinuxCNC.However, I also heard that using an Intel i210 network card might allow me to avoid the cost of a Beckhoff coupler by using it directly with the EtherCAT Master.My first question:
Is it possible and reliable to use the Intel i210 with LinuxCNC and Delta A2 EtherCAT servos, without a Beckhoff coupler?Budget constraints:
Servo motion controllers are expensive. I’m taking a small loan to start this CNC project, so minimizing cost is crucial. That’s why I’m exploring EtherCAT-based servos — to avoid the need for expensive motion control boards.Alternative option:
I can buy non-EtherCAT servo motors (a brand called “SAM”) for almost half the price, but they require a motion controller. My only affordable option is something like an LPT-based Mach3 controller board. My second question:
Are LPT Mach3 controller boards reliable enough for a professional CNC router (metal and plastic parts)?
Or should I stick with EtherCAT and avoid LPT altogether?Any advice or experience would be very appreciated. Thank you!

Hello folks,
long time no see. I´m on a new retrofit project and i ran in a new problem. I want to enable the drives with linux cnc but i can´t get the active low to work.

I´ve got a 7i77 hooked up
24V Fieldpower
Pin 9 should be drive enable
Pin 10 is GND

I can move the servos when the drives are enabled.

Attached is the pinout for the drives and when i short pin 10 to 9 the drives become enabled and if 9 and 10 are not connected they are disabled. I tried connecting ENA+ and ENA- according to the 7i77 manual. But it doesn´t seem to work, either they are always enabled or always disabled, but no reaction to Linux cnc "machine on" button.

As far As i´ve understood, you should connect pin 9 to ENA+ and pin 10 to ENA- OR pin 10 to control power ground, but control power ground is the ground of the 24V power supply ?
Anyway neither configuration worked... Please enlighten me

It's named controlword in ethercat-conf.xml, not cia-controlword.
Also change all lcec.1.0 to lcec.0.1 in the hal file.
 

It crashes when you modify any variable comparison object with the "Display symbols" box checked.

Uncheck the box and you'll be able to modify the object without CL crashing. Save button is key with CL.

Posting your current hal and ini files would help debug your issues.

To launch halshow from axis:

Machine --> Show Hal Configuration

Finaly getting something done lol, got the end stops to work but now when I home the x, it hits the home/min goes off the switch then hits again but it triggers a joint error causes it shows 0.0001 and not 0.0000 like the z does, is this a switch prob or a me not knowing what I'm doing prob

7i92TM should be possible to directly plug into 7i76U without cable.

For now I'll just accept the situation and carry on with the small delay, until I got the whole toolchange process sorted.

Im at the point now where the carousel extends, gets detected, spindle moves to clearance height, spindle unclamps the tool etc..
All 5 sensors are working, Carousel Home, Carousel Index, Carousel IN position, Carousel OUT position and the Spindle Tool Clamped and Tool Released sensors.

Now its time to program the final movements, placing and removing a tool from a pocket.
Will be a little different probably compared to other carousel toolchangers where the carousel moving in and out takes the tool from the spindle.

When no tool is loaded it has to move down, clamp the tool, moving to the right to take a tool from the pocket, carousel retract, spindle up again and resume.
Or with a loaded tool it has to move in front of the carousel, moving to the left into the pocket, unclamp, up, rotate to new tool, down again etc.

Should be fun, hopefully it won't get fooked. :-D

I am using a Mesa 7i92TM connected from P1 to a Mesa 7i76U.


In that case, the configuration file is incorrect. P1 is for the second 7I76
(which has stepgens 5 .. 9)

It's expected if you have a single 7I76, that it be connected to P2

Also you might try checking that the direction pins change state when jogging in either direction

(you will have to disable homing to do this test)

Attach a picture of the wiring here so we can have a look.

Hi PCW
Thanks for your prompt reply
I changed the step time and space time to 5000 for all four motors, switched off everything, and restarted , however it makes no difference (the motors don't move)
I was not sure where to measure the 5v, but choose 7i76u's TB2 connector and checked axis 0 through 3 , using the ground and +5VP on each axis, and all measure 4.9v . (The 5v comes from the 7i92T).