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Temperatures are below 50deg C. But the machine is showing it would move, but it doesn't. I have to completely shutdown and restart, then maybe it is working.

Yes, those are constants from the .ini file.
Each LinuxCNC configuration consists of one
or more hal files and one ini file.

I now know this from hal tutorials
loadrt threads name1=test-thread period1=1000000


but in my-mill.hal, I find this line to load the thread

loadrt [KINS]KINEMATICS
loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[KINS]JOINTS

what the square brackets and what inside the square brackets mean.? I think they are constants to be retrived from the configuration I made in the stepconf wizard





 

I have a small rotary table I'm trying to get working. It has an old MCG servo (Model
MCG 2234-M4903) attached to rotate the table. MCG has been out of business for a while, and there's not a ton of info out there about these motors.

According to the servo's label (see picture), it's 50 oz-in, 2 amps, and 3000 rpm. I think it probably takes 60V.My main goal is finding a suitable servo driver with good LinuxCNC compatibility.

I assume LinuxCNC works with servo drivers in a similar way to stepper drivers. I'm using a Mesa 7i96s for my interface board.The servo motor itself has an old DB-style connector with 15 pins (two missing) and a 4-pin DIN-style connector. I'll have to figure that part out later.If anyone has any info or tips, I'd appreciate it.Thanks. 

Oliver, bit of a heads up; I'm keeping all of Sunday free to play RIO and motion controls (way too fun man). On that great Sunday agenda is this MPG implementation!!

When you have time to think about it, I'd love to hear about creative way(s) to implement this MPG into Rio in the most simplistic possible way (aka for noob!). At least some hints as to where to begin with this, and I'll figure out the rest (coughs lol).

what that means..?

Thx Guys, I've tried your settings cakeslob but in my case it was bad, really bad.
After more testing I've found right settings at :
P_GAIN = 38
FF1_GAIN = 1
DEADBAND = 0.0001

So far those are the best ones. I will keep testing those values today after work.

Sorry if wrong topic but would this be possible with pokeys57cnc?

It is great controller card but I would prefer not to use mach3/4

I did a linuxcnc clone tag: v2.9.3
Then added : linuxcnc-ethercat and set path to halcompile, then did make, and make install.

Then edited the axis_mm.ini configuration to run with ethercat.
It's maybe unusuall to add a extra thread for the ethercat bus, but it works.

Now i can test the ethercat production machine.

 

I was irritated by that message too. But I am not sure where that message comes from. Attached are the comparison between the old (AMD high latency, but working fine) and the new PC (intel low latency but nothing than problems). This was all taken under high load.

All the settings you mentioned in the bios are already disabled. Sensors I have not watched.

you can simply use shiftregisters,
it's faster than going via a microcontroller and spi, and cheaper too. i always say that you shouldn't run encoders via the expansions, but it's still faster than using an MCU. and as long as the encoders aren't connected to an hf-spindle, it works too

Thanks for the earlier reply meister, regarding using extra pins on your Tangoboard, I downloaded the datasheet for the nano 9K and that also cleared up a few things.

I was thinking, since you are already using SPI for your expansion IO boards, would it be feasible to use a hardware quadrature decoder chip, or something along the lines of DigitalChicken's OctoQuad code running on a Pi-Pico? Basically it will read 8 high speed quadrature signals (1MHZ) and convert each to a 32 bit position value per encoder that the controller calls for via SPI when the servo loop is required to be updated.

The idea is to have a dedicated expansion board for this, with 8 RJ45 connectors, associated line receivers and the decoding hardware. I know closed loop to LinuxCNC isn't everybody's cup of tea but you could also use it for spindle encoders, MPG's etc.

Cheers.
Russell.

From your log file:You have to fix latency issues first, that will for sure case rough running of the machine.
Check your motherboards BIOS and disable hyperthreading, turbo, TMP, power saving option, C states, speed step, whatever you do not actually need, then try again.
If you do get latency warning after disabling the above, check the temperatures with
sensors
in a terminal while LinuxCNC is running.

blazini36 wrote:

rodw wrote:

Odd, it works for me CATIO-A

 
Do you have the vendor data from the ESI....I don't think most of that AliExpress stuff is legit.No 

No, I have no idea what an ESI is.  It would be pretty hard to clone an Ethercat chip. The license is embedded into the chip so they just need to buy the right chip.

Moved to "EtherCAT" section.