Hurco KMB-IS CNC update

Attempting to connect the encoders.

They are Litton Industries with these numbers: 416 0248 010 27779

Googled a bunch and did not find any datasheets.

There are 5 wires coming out of the encoder.

My guess is the color coding of the wires is more or less standard.... but I don't know what that standard is. Any advice?

Maybe I can answer my own question.

Seems like when I spin the shaft, the a and b outputs should change rapidly and index should pulse only once per revolution.

This resolves the index output. Randomly connect the the other two outputs a and b. If the direction reported by LinuxCNC is incorrect, swap the two wires.

Done.

Found an even better answer...

Mesa 7i77 documentation error? I'm looking at version v1.20 which I downloaded from: www.mesanet.com/pdf/parallel/7i77man.pdf

I think the ENs and AOUTs need to be swapped in the pin list.

A pretty obvious problem??? Googling didn't find a problem report.

The manual pinout is correct

TB5 pin1 (bottom pin) is ENA0-

Looking to get the spindle going.

Using an Allen Bradley 1336 Plus VFD. This VFD takes 0-10V for speed and a separate signal for reverse.

When I look at HAL pin ANALOGOUT5, initially its zero. If I click the spindle clockwise it goes to 1. If I click the other spindle button it goes to -1.

That all makes sense except I need a 0-10V (I can fix the scaling) magnitude signal and a separate forward reverse digital signal.

Looked through pncconf and don't see any options for this. Tried Googling and didn't find an answer either.

Is there a way to convince LinuxCNC and the 7i77 card to play with my VFD?

Found something cool I wanted to make a record of.

I was planning on taking the original Hurco control panel and cutting out the existing CRT and tape drive holes for sort of LinuxCNC display panel. The owner of the machine wants to preserve the original Hurco control panel.

OK, so now probably I think we should use the existing Hurco swing arm and replace the control panel with a display/keyboard/mouse. But at the very least, we still require a hardwired E-Stop.

Lots of CNC pendants out there. Most of them USB based. USB will not provide a hardwire E-Stop and the MPG will be subject to "GUI delays" which are quite common with the RPi4.

Ran across this: wapl.es/cnc/2020/02/23/linuxcnc-jog-wheel-setup.html

Hard wired E-Stop and MPG Ordered one from Aliexpress.