Advanced Search

what about the gs2_vfd enable pin?

So, once the startup procedure has successfully completed, does your component reconnect automatically after a powerloss in the VFD? If so then my comment above would not be accurate and the startup delay was really all that is needed.

The error translates to:
'Linear motion in line 0 would exceed negative limit for axis z'
'Linear motion in line 0 would exceed negative limit for joint 2'

I have an old cnc4pc board with the RJ45 connectors, in all honesty I found them a bit of a PITA. The plugin screw terminals are great. Tho the ones that Mesa uses are really expensive, but unlike the more common ones, which you cant put side by side and have the plug part "straddle" the socket part or use 4x2 way plugs in a 8 socket, the Mesa ones can.

I'm really sold on bootlace ferrules & screw terminals.
I had a think my self about a modular design for my hardware, even had a run of boards made, but then thought going with a Parallel Port compatible setup would make a change over from a Parallel Port s\w stepgen system easier. Tho I'm still running with an EPP interface.

Not being entirely familiar with the chip used it's hard to say. It cold be a case of having to give up one feature for an other, can't really say.

Exactly - the sserial is working correctly, but I can only access analog I0-I3.

As the card was advertised as having 8 inputs, I wonder how they can be acessed - or are the specs on the Mesa webpage simply wrong?

Thanks for the A/D hint - this should work as a workaround, but making the existing hardware work should only be a software thing...?

It all makes a very solid impression on me.
I also find optos on the step/dir outputs excessive, I don't know of any drivers without built-in optos.
The advantage of your board is also the modular design,
so you can easily replace a part if it doesn't suit someone.

I find the 12bit per module more than sufficient, I had already experimented with modular boards and 8bit + enable were actually sufficient for me. The whole thing was actually mostly limited by the number of connectors I could place per module.
 

Yeah that's not the issue. From his screen shot of hal show the OP has everything setup correctly. Communication appears to be good.
The issue is that the OP wants to use more than 4 analogue inputs, but the 7i73 is only reporting 4. The question is how to access the other analogue inputs.

Unfortunately reading the 7i73 manual, it appears only the first four of eight are available.

Would it be possible to ditch the analogue joystick, thereby freeing up the 4 inputs and using pots to set up the jog speed ? Not quite as convenient.

Another option could be an SPI A to D and bit bang the data through.

This is an example using the parallel port, but should be adaptable.
www.wallacecompany.com/machine_shop/EMC2/serial_adc/

Something like:
loadrt [HM2](DRIVER) board_ip=[HM2](IPADDRESS)  config="sserial_port_0=01000000"

After the "=" sign, the first digit is the host board (i.e. 7i96s, 7i76e, etc.), and the 2nd digit is the sserial board connected to the host.

=01000000 - host board mode (7i76e, 7i96S)
=01000000 - sserial daughter board mode (7i73)

Make sure to figure out (i.e not overwite) what your existing host board mode needs to be.

@COFHAL-

Yes, because my VFD is not powered at startup, LCNC shuts down with a modbus error.

What I was asking earlier is if there is a way to delay LCNC trying to communicate with the VFD until after LCNC has finished starting up.  Specifically, after estop is deasserted and machine-on is true.

Ideally, estop-clear would trigger LCNC to attempt communication with the VFD, and perhaps prohibit machine-on if communications weren't established after some time.

Thanks for the comments guys, running this fixed my issue.(not sure why)
sudo apt update
sudo apt install -y linux-headers-$(uname -r) ethercat-master linuxcnc-ethercat

www.nomachine.com/

What is the servo thread period?
 

Watch dog timer is 5ms, HAL file attached.

Does that require any change?

I use the carousell component with a stepper motor in step-dir mode without any problem. So I think there is no problem using a servo motor.