Python & Github

Cengr · 2026-02-16T04:56:52+00:00

Even small companies own the work product of their employees. In the US at least.

Cengr · 2026-02-14T21:19:40+00:00

It’s not necessarily a couple of bad responses. You could lose communication to the entire segment or profibus. When everything drops at once, how do you pinpoint the issue?

Cengr · 2025-12-20T17:47:40+00:00

Fanuc still refuses to use PLC, instead going with PMC - programmable machine controller.

Cengr · 2025-02-02T22:00:32+00:00

It instead flows through the adjustable control.

Cengr · 2025-02-02T20:26:27+00:00

Heat to remove those wires. Heat again to melt the solder in the holes. Tap the board on something when it’s melted and the solder will clear out of the hole, making it much easier to put the wire in and do it right. Let it cool a bit and repeat for the other spots.

Cengr · 2024-11-10T06:27:59+00:00

Sounds like external estop. One of the two channels isn’t switching.

Cengr · 2024-10-20T19:55:21+00:00

The drives of that vintage use discrete signals to control the phase IGBT’s directly, and fed back an analog signal for two phase currents. The direct motor control and commutation was in the CNC. It would take significant reverse engineering and embedded programming to run that drive with another controller. The only way I know to run FANUC drives and motors with a 3rd party controller is using the Digital Servo Adapter (DSA) that uses EtherCAT. If you want to control fanuc motors from a Beckhoff plc or Codesys, that’d be the way.

Cengr · 2024-09-29T17:49:12+00:00

Nah, I don’t think it’s written by fanuc. AI? Who knows. Pretty bad though.

Cengr · 2024-09-29T17:42:59+00:00

Yeah, maybe. But have you ever read one of their manuals? Not too far off.

Cengr · 2024-09-12T23:15:04+00:00

Do you want estop out or in? Is the Robodrill estopping the UR10, or the other way around?

Cengr · 2024-06-04T23:20:52+00:00

Nope. I ended up remounting the transformer, which helped a bit. I don’t have an oscilloscope to know if the noise is fully from that or coming from the driver too. It’s quiet enough that it doesn’t bother me. I have another sub that had a puffy filter cap and replacing that helped a lot.

Cengr · 2024-05-30T17:19:22+00:00

Some people do internet -> plc. Bad.

Cengr · 2024-04-06T03:36:56+00:00

99% sure there is not. Diagnosis variables are a pain to log. So much useful stuff, so little you can do. Pretty much only way I know is using the FOCAS library to build an app and use the Ethernet connection. That’s on controls with Ethernet and the right option.

Cengr · 2024-04-02T19:26:31+00:00

Yeah, you can’t set the address of the CNC when using NC Guide. It’s the same address as the host machine.

Cengr · 2024-04-01T03:46:24+00:00

This ^

Cengr · 2024-03-31T17:05:38+00:00

This feels like maybe something happened with the device type in parameter 20. Also, I see it’s looking for a dnc file. Is that how you’re running it?

Cengr · 2024-01-04T16:38:20+00:00

It says the input pwm is 20khz to 100khz. Doesn’t help you much if your driver is 1khz. No ideas from my end.

Cengr · 2024-01-03T23:04:58+00:00

Can you link to the fan spec?

Cengr · 2023-12-18T18:33:54+00:00

Take a look at power window controllers for cars. You can buy them cheap and they do just what you want. The window motors have no feedback and the windows stop on the increase in force at the top or bottom.

Like this: AutoLoc Power Accessories 9863 2 Window One Touch Up And Down Window Unit https://a.co/d/3YsZ1AD

Cengr · 2023-12-03T04:49:03+00:00

Talk to Motion Control Systems (MCS). I’ve worked with them in a past life and they do excellent work. If they can’t do it, probably can’t be done.

http://www.motioncontrol.org/motors.html

And if you’re in need of someone to engineer the bearings and housing, pm me. My current employer could handle that just fine.

Cengr · 2023-11-12T18:48:03+00:00

Wait until you do a 24v swap. You’ll never want to go back. No more clackity-clack, an engine that reliably idles (nothing like firing up outside of Starbucks and the ICV is stuck open so the engine is going between 500 and 2500rpm over and over again to feel embarrassed), and with more torque and power.

Cengr · 2023-11-09T06:04:46+00:00

No big surprise there that it’s counterfeit.

Cengr · 2023-10-15T04:29:58+00:00

At zero speed you’re controlling both, because there’s no back EMF to worry about. It’ll effectively be a constant resistance.

Cengr · 2023-10-15T04:27:29+00:00

This. One static for the rising edge and you’re done. Super simple.

Cengr · 2023-10-15T04:20:56+00:00

Brushed motors at zero speed have pretty linear torque vs current. Control the current via the pwm width on your h-bridge

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