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Thank you all!

Hello, I'm a beginner in Probe Basic UI and want to add some machine specific buttons in the USER section of the UI screen.
I understand that the layout is designed by using Qt Designer but have no glue whow to link/connect the button with the hal pin or signal of the machine.
Any advise ot link to a helpful YT video is apreciated. I could not find a YT tutorial or step-by-step guide/documentation.

I've been distracted by configuring a CAM post for this machine, and kind of blown away, that after months of learning, I can decide on a strategy, select tools speeds feed etc, and output the NC code from the CAM system and linuxcnc, parses it without comment. Not only that the machine runs the code and the the part is to drawing. Just excellent.

The orient.svg chart, while I get some of what it is telling me, i cannot understand how I need to convert it into hal statements. I thought by now I would get this stuff but I don't. which ones are loadrt, addf, setp and net ?

Sorry to be a dunce.

Could I ask for some pointers please?

Thank you very much

It's the xy allowance 0.25mm , using a 6mm tool machining 6.05

Hello,
i just started with SolidCAM and try my first job -> attached photos..
All working toolpathes are blackish and one not working toolpath is blueish. Here i want a 6.05mm hole/4mm deep. Tool should be a 6mm end mill.
Tried many things but still don´t work.

Please help

..AND, I see now, Mesa page says 7i84 is obsolite, there is the 7i84U now..


AND differences are: 
1. Field outputs can be set to sourcing, sinking, or push pull modes on a per output basis.
2. Field outputs do not require flyback diodes for inductive loads regardless of load current.
3. 500 mA output current

So, nice!

Thanks! 


 

Thank you Tommylight,
looking at the 7i84 specs pdf, it seams the easiest solution.

Inputs and outputs works from 5V to 28V so it's ok (and yes you're right about the half/half voltage, as stated in the pdf).

There are two version of this board:

sourcing outputs: (7I84)
or sinking outputs: (7I84D)

I will use inputs only for now, but... I have to decide which one is better for any possible future expansion...

Any ideas? Better sourcing or a sinking outputs?

(Post Scriptum: probably Sourcing is better?)

Thanks

I also cover RT tuning in this video


What's not immediately clear that the servo thread and base thread are the only RT components used by Linuxcnc so that is why you only see one core in use.

LearningLinuxCNC wrote:

The load fail red led does come on and stay on when I boot up linuxcnc and get the error messages. also the green estop ok led is lit as well. Prior to starting linuxcnc the light is off.


 

OH, didn't read closely enough!  If you are saying the Load Fail LED only stays on after LinuxCNC starts?  I know of NO WAY LinuxCNC can turn this light on, except by maybe causing a fluctuation of the 12 V supply.
Please give a bit more detail.
Jon

LearningLinuxCNC wrote:

Jon,


The load fail red led does come on and stay on when I boot up linuxcnc and get the error messages. 

This is the killer problem!  The FPGA is not accepting the load of its program.  It is somewhat unlikely the EPROM has gone bad, but possible.  First, check that the +12V supply is operating properly, and does not have excessive ripple.  Without a valid program in the FPGA, nothing will ever work.  If the power supply is good, then it is possible the FPGA has been damaged, or one of the regulators on the board has gone bad or is overloaded.  You can check from the wide tab of U31 to one of the G terminals of P2.
That should read +3.3 V.  Then check the wide tab of U32, that should read +1.2V.  If either of these is out of range, something got popped.  You can also check for correct power up with the parallel port cable disconnected.  D4 (Load Fail) should blink once and then stay out.
Jon

You can also use a simple BOB on the expansion header, adding 5 more inputs (limited by BOB, not by Mesa).
And for RS422 see Mesa 7i84, it has 32 inputs and 16 outputs that work with 24V, but also work with 5V, i am pretty sure you can have half of IO with 5V and the other half with 12V or 24V or any combination of voltages as half and half. You might want to wait for confirmation of the half/half thing from PCW as i did something like that several years ago and i am a bit fuzzy.

Thanks PCW,
that's interesting... so maybe I better think about an expansion card to connect more inputs... I Know 7i96 has RS-422/RS485 and there are cards expansion with many I/Os...
I will think about. My limit switches works at 24V but I can think for a solution if this card works at a lower voltage...

A disadvantage of multiplexing is that the switch detection will be slower (by a factor of the servo thread period times the multiplex depth)

You could also use the parallel expansion port to add 17 more inputs (though 5V only and probable should have 220 Ohm or so
series resistors for protection)

Thanks Tommylight,
I know I can connect more limits/homing to the same input, but in case of a wiring problem/fault I will have a generic "Limit switch triggered error" and I would have to check all the switches wiring...

Instead if is it possible to multiplex limit and home switches inside LinuxCNC, by adding diodes connections between switches, it will reducing the all problem to 4 inputs only. This way, in the case of triggering I have the exact error like for example "Y Limit swtich triggered", so I can check only the Y wiring (in this example).