Need help with Parallel Port Setup. (ESTOP issue)

Hi,
We are working to retrofit a sherline VMC with linuxcnc/Pathpilot. We are using a 4 AXIS TB6560 Driver Board to control the machine.
I was following the tutorials provided by Sarah on how to configure the Pathpilot configs to work with a parallel port. I was able to make it work somewhat because whenever I am trying to jog X or Y axis using the keyboard, the machine will jog a bit and then I'm getting an ESTOP error. I suspect it is because of lack of debouncing the pin as we have directly connected pin 13 of PP to ground via a switch.

I have attached the image of the error for the reference. TB6560 board has 4 inputs for limit switches out of which we decided to use 3 for limit switches and 1 as an external ESTOP which is connected to parallel port pin 13. Can someone take a quick glance at our hal/ini files to see whether the estop input pin config is correct or not.

Also is there a way to bypass this pathpilot ext-estop? We don't want an external estop to PP we only want to use the software estop in the PP gui.

Thanks,
Shadab

Was not able to attach image so adding an external link: imgur.com/a/LWoZ1rm

you're outputing the ESTOP not inputing it

setp parport.0.pin-01-out-invert 1
net estop-out => parport.0.pin-01-out

you need this on a input pin

I thought estop-out was supposed to be an output estop signal to the driver board's EN pin. As you can see from the parallel port pin configuration for the stepper driver board's first pin is EN pin for all of the axis drives.




Parallel port pin 10,11,12 and 13 are inputs while rest all are outputs(from the perspective of the computer). Please correct me if I'm wrong, my assumption, from reading the original tutorial's HAL/ini files is that estop-out is output signal from LCNC to driver and estop-ext is external estop input from an external E-switch to LCNC.

Also can this be an issue of debouncing, I've read in some other forum posts and people seem to have this issue. I can jog the x and y axis for aboout 30 seconds before the ESTOP occurs. Is it possible to bypass this estop-ext? Is it something PathPilot can work without?

Thanks,
Shadab

I'm not able to view uploaded images for some reason, here's a link to images I was referring above imgur.com/a/ZBjY2GJ

Thanks for the suggestion I tried to implement it. Disable the following lines:

I'm still getting the same error. If I disable all the estop lines I'm not getting any error and I'm able to run continuously. I'll check with my hardware team if there are any issues in the connection.

net estop-out <= iocontrol.0.user-enable-out
net estop-out => iocontrol.0.emc-enable-in

In my recent post i forgot to mention only these two lines are active rest all are commented.. I will post the latest configs tomorrow asap.

Thanks,
Shadab

Hi David,
I have attached the files here. I'm able to home all three axis correctly and also the limit switches are working as expected.