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What protocol does the sensor use?

Modbus is supported by Mesa FPGA cards with the hm2-modbus/PktUART
drivers.

If your sensor does not use Modbus, fora Mesa card, it would require
a driver part like hm2-modbus communicating with the PktUART driver


 

aaron wrote:

I am unable to stop the screen from going blank and

In Trixie you have to disable power manager and screensaver in startup options (Main menu -> settings -> session and startup) and add the line bellow to ~/.bashrc 

You should be able to disable the screen saver under power settings and/or Display but it has got more difficult
In my ISO, I had to go to great lengths to force this modifying xfce config files but its not in a format to share as a script as its in the live build environment
 

aaron wrote:

Thanks for all your replies.  However, I found the only way I could do the install was by downloading Debian, doing apt update, apt upgrade, and then installing LinuxCNC via Synaptic.  Worked a treat.


 

That might be a fairly old version of linuxCNC.What is the version  number printed on the splash screen? Or in the console if stating from the terminal?  current is 2.9.10

For interest, I had a pendant I had hardwired in that had a Deadman switch that had to be held in before you could jog. I was using Gmocappy at the time and I got sick of changing modes which also changed the tab. I was able to wire this Deadman switch to halui.mode.teleop and life was happy as I never had to bother swapping modes again.

I've never attempted it myself, but supposedly it should be possible.
linuxcnc.org/docs/html/drivers/mesa_modbus.html

I have always used an ordinary serial port (such as a USB to RS485 adapter dongle) to communicate with Modbus devices using the MB2Hal driver.

for the verilog/fpga developer:



Verilator and SDL2 is a good combination

PS: also added an pin oscilloscope function:

 

 

Thanks, everybody.  Turns out the parallel port card was a cheap one that, wouldn't work anyway.
Got a new one and everything seems okay.
Cheers
 

may be need chmod

HI
I have just updated the hardware and the software running a 4-axis router to LCNC on Trixie. However, I am unable to stop the screen from going blank and, more annoyingly, when I run a program, the machine randomly stops moving partway through the job, and I have to press the stop button on the screen, click on the last line of code it ran, and then click 'run from here'.  When this happens, the screen is still active, but I am wondering if these two issues are related.
Can anybody offer a solution?
Thanks Everybody

Thanks for all the suggestions and ideas!
I will give it a try and see how it works out on my machine.

Thanks for all your replies.  However, I found the only way I could do the install was by downloading Debian, doing apt update, apt upgrade, and then installing LinuxCNC via Synaptic.  Worked a treat.

 

Would you be willing to share any details of the protocol? Specifically for MDS-B? I'm trying to do the opposite of you, implement a device that emulates a MDS-B drive to a Meldas 600M control, and drive my custom built 4th axis from it.

Hola. I want to use a CMOS laser sensor with an RS485 interface and find out if it is possible to use the RS485 terminal on the 7i96s board to read the sensor values. My goal is to use the laser to measure height and move the Z-axis to a specific initial height on a plasma cutting machine. I consulted Gemini AI, and it indicated that I needed to flash new firmware to enable this function; consequently, I visited the Mesa website and downloaded the hostmot2 file for the 7i96s. Could someone confirm if that hostmot2 file allows me to use the 7i96s's RS485 port in the way I intend? Thank you very much .

Input 8  (TB5 pin 1)  is

hm2_7i97.0.inmux.00.input-08