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Thanks! I'll try!

Will keep the smart serial cards in mind in the future. Thank you Andy.

Sorry, yes, I replaced the qtaxis.ui in my configuration folder/qtvcp/screens/qtaxis.ui (new), and then what must I do?.

Hi PCW,

Noted. Will look to the pncconf in depth next week. I tried the pncconf yesterday. I got to the point where you choose which mesa boards I am using. From gathering in the internet, i should be using the 5i25 since 6i25 is not in linuxcnc and 7i77 x 2 i guess...

As for the Analog I/O thank you for the clarification. So instead of ENAn+ and ENAn-, I should connect the servo drives to the 7i77's AOUTn and respective GND.

Thank you for your assistance.

UrKibin wrote:

As I have already purchased the Plug-N-Go Kit (7i77 + 6i25) from Mesa, I would like to use them.

If you already have the cards, then definitely stick with them, they will work fine.

You can expand to really rather a lot of IO by adding smart serial cards, if you need to.

You don't replace the original ui file, though that will work.
you put it in YOUR CONFIGURATION FOLDER/qtvcp/screens/qtaxis/qtaxis.ui
Qtvcp will see it there and use it instead of the original/

Normally the basic configuration is created by one of the two configuration utilities:
pncconf or MesaCT. These are GUI programs where you enter the intended interface hardware and
basic machine specifications (dimensions, encoder scaling etc) and I/O connections
(limit/home switches spindle controls etc)

Note that the analog out pins are AOUTn. The ENAn+ and ENAn- pins are a switch to enable the
drives (on when enabled)
 

Hi all 
I am unable to loop more than 25 times using the M98 and L commands. Eg the below code will execute 25 times even though L says 40 in the latest 2.9 version. Please help!

M98 P101 L40
M2

O101
some code
M99

 

Hi Andy,

Good day. From what i have gathered in the user manuals available in the internet and checking the existing connection from the servo controllers to the non-functioning acramatic 2100 controller,

each servo controller (X, Y, Z, and Spindle) has
1) +-10V inputs (i assume to drive the servo motors)
2) An A & /A, B & /B, and Z & /Z encoder outputs.

I was thinking of connecting the +-10V servo inputs to the 7i77 by its TB5 outputs namely, ENA0+-, ENA1+-, ENA2+-, and ENA3+-.

Then connecting the servo encoder outputs to the 7i77 by its TB3-TB4 inputs namely, QA0 & /QA0, QB0 & /QB0, IDX0 & /IDX0, for all axes and the spindle.

If that is correct, my only problem now would be the configuration under linuxcnc which I have no idea where to begin.

As I have already purchased the Plug-N-Go Kit (7i77 + 6i25) from Mesa, I would like to use them. But will look into your suggestion since they have more pins. Also, it would be generally hard for me to purchase additional boards since I am from the Philippines.

Thank you very much for your assistance.

Thanks

What version of LinuxCNC?

I don't recall any encoder bugs of that type, is it possible
there is a 32 bit wrap (that's a lot of turns though unless you
have a very high res encoder)

Also could be some kind of failing hardware (PC memory, PCI, FPGA card etc)

The 7i76E is in (or eventually will be) the same enclosure (and same power cord) as everything else, except the PC, which is elsewhere. Putting just it (24V) on a UPS would be a technical challenge.
As for the motors, to keep the encoders powered that means another power supply (16V) in that enclosure that needs a UPS, and I'd have to get around to testing the following-error code
The motor's big power supply has pretty beefy capacitors - so much so that I have a discharge circuit on it's contactor for when I power it down.
My machine homes pretty accurately, at least enough for my purposes (woodworking) so a following error is not much better than a reset.
The spindle vfd is already monitored for faults (modbus).

Now I get to research tiny din-rail UPSs for 24V and 16V...

If you have a Mesa card, then mesa_modbus might let you control it in realtime.
This isn't really worth worrying about with a mill, but ought to be better with CSS on a lathe.

Maybe you could power the 7i76E from the UPS too? The spindle VFD can probably handle a sub-second power interruption on the bus capacitors.
The servos may stall, but there is some chance that they might recover position if the encoders remain powered. And if not, then you will get an f-error report, and still have a live system to recover with.

Hi

when i am running a job and it incolves some 5 axis moves so C axis becomes quote a large count. as there is no unwind code i do a quick G10 L2 calc and run the next part

after running 5/6 parts i get a following error on C axis every time, if i rehome the joint (c axis) and G10 L20 to zero the joint error problems go awayi and i can carry on running parts untill the next 4/5 are done same joint error right at the same program point each time

ia this todo with some max count being reached?
what i have noticed is the raw count pin is counting right but the PID feedback is going from a - number jumping to a + number giving the joint error trigger,
-32767.84 to +32767.86