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Looks like you have TX and RX swapped:

Here is the schematic of the 7C81s local RS485 ports
(you don't need drive enable for sserial cards):

 

It has a pullup resister to Vcc

is TXEN tied high?

  Finally got back to tracing the 7i87 wiring. The schematic was wrong but the actual wiring seems correct. I traced it from the 6i25 pins all the way to the 7i87 board and can't find an error.

I reflashed the 6i25 board and confirmed that the SSerial channel is installed. However, when I look at the hal configuration the SSerial pins just show as GPIO.

Do I have to do something in the HAL or INI files to get the smart serial module to work?

I'm attaching the corrected schematic for the RS485 converter.

Current mesaflash version at:

github.com/LinuxCNC/mesaflash

is 3.5.7

You can jog before homing if required.
This requires duplicating the axis jog connections
with similar joint connections.

That is, Axis jog enable and count inputs are not
active until homed, but joint inputs are active before
homing is done.

hmm, i havent actually tried it out because I dont use rpi gpio so much right now. but it looked neat

lol i mean the machine,
but yeah the kins will be the hard part, but if you check out the advanced configuration section someone can help you

hmm ok the estop thing looks like a syntax issue, copy mine exactly

The new authoritive source repository for the LInuxcnc ethercat driver is here github.com/linuxcnc-ethercat/linuxcnc-ethercat
Note there is emerging support for some VFD's (Omron MX2)

This repo feeds into a buildbot so changes are hosted by the etherlabmaster team so installing from repositories via my sticky gets both the ethercat master and the latest hal driver from the authoritive source.
This repository is set up in your sources.list by the 2.9.2 ISO ready to install

The etherlabmaster source is here gitlab.com/etherlab.org/ethercat this also feeds into the same buildbot and is hosted on the same repository I mention above.

Hi unfortunately grub command line doesn't tell me anything. how do i get there and what command do i have to enter there?

The problem was very simple, my machine was not homed. ^_^'

The s-curve multi-segment solver is working efficiently now. This is 100 1.0in segments with a v_max of 100in/min, a_max of 40in/min, and j_max of 20in/min. The oscillations on the second half of the path are because I'm using a very crude method of solving velocity overshoot from the end of one segment to the start of the next segment. I need to figure out another set of equations to get the second half to look nice like the first half.



You can see how this contrasts with a single 100in segment with the same constraints. This is because each s-curve has to begin and end with zero acceleration.


Edit: This is better, but not super efficient.

Then there is a lack of voltage, the power supply is with two 1.5v batteries.

1.5V is most probably not enough for it to work, it should be 3 to 5V depending on other hardware, but usually 3.3V or 5V.

the screenshot you sent, it shows "no_isolcpus". I would try „isolcpus=5.7“ in grub command line.