Powermax communications issue

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08 Nov 2021 00:55 #225614 by CFE
Replied by CFE on topic Powermax communications issue
Hmmm, all I get after I plug in the adapter is this :

[    7.481197] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[    7.481210] ftdi_sio 2-6:1.0: device disconnected

I had a look through some stuff regarding serial usb thingys and it might have something to do with the kernel, but that is a stab in the dark. Anyway, I think I will let it rest, it is taking up way too much time already. Just a bit disappointed that it stopped working after I switched to the 64-bit version, it was working so well on the 32-bit version.

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08 Nov 2021 07:13 #225635 by phillc54
What Linux distribution are you using?

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09 Nov 2021 02:28 #225754 by CFE
Replied by CFE on topic Powermax communications issue
Hi Phil,

I use the ISO image from the linuxcnc website, Debian Buster.

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09 Nov 2021 02:38 #225756 by phillc54
What is the response from entering groups in a terminal?

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09 Nov 2021 03:04 - 09 Nov 2021 03:06 #225760 by CFE
Replied by CFE on topic Powermax communications issue
Hi Phil,

I get this from groups :
plasma dialout cdrom sudo audio video autologin

I added plasma to dialout a while ago after some searching, but I am not sure if this looks right ?

By the way, our computer does update nicely with the 64-bit version, I am on the latest version. Adding the offset possibility for the camera is a nice touch !
Last edit: 09 Nov 2021 03:06 by CFE.

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09 Nov 2021 03:15 #225761 by snowgoer540
I guess it would have been helpful had I noted earlier that I am running MX Linux 19.4.  Sorry about that.

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09 Nov 2021 03:30 #225762 by phillc54
I think I have totally run out of ideas. :(

I don't recall having any issues with USB serial adapters when I was using the ISO distribution either. I am wondering wether you need to install a driver for that adapter.

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09 Nov 2021 03:33 #225763 by CFE
Replied by CFE on topic Powermax communications issue
I suppose there is a windows driver fo the adapter, but how does that work with linux ? From what I have read the chip in the adapter is used for different protocols (RS232, RS485 etc, and that's where the driver probably can sort it out. How to make that work in linux ?

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09 Nov 2021 03:50 #225764 by phillc54
If it was required then there should be a Linux driver. I have never needed to add adriver so I really have no clue.

Thinking about it further though makes it seem odd that a driver would be required for a 64bit version when the 32bit version worked.

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09 Nov 2021 04:01 - 09 Nov 2021 04:06 #225766 by CFE
Replied by CFE on topic Powermax communications issue
Hi Phil,

That's what I thought too. There are drivers for the adapter that we use, but only drivers for Windows and Mac. And yes, the thing worked flawlessly on the 32-bit version. It really got me stumped. Worst thing is that is probably some crazy little thing we don't know off, but buggered if I know how to find that out.

What is strange that in the log from dmesg I can see that first the serial converter is connected to ttyUSB0 but at the end of the log it is disconnected from ttyUSB0. That happens after this line :
6.844442] usb 2-6: usbfs: interface 0 claimed by ftdi_sio while 'brltty' sets config #1

Wonder if there is some interference from other USB devices ?
Last edit: 09 Nov 2021 04:06 by CFE.

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