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I had this machine running years ago on a cheap controller. Then bought this 7i76e and got some basic functionality then the machine went into storage for years. 
Now I'm trying to get it properly set up and add some features. 
I thought I would make a thread for this phase of the project instead of each individual question. 

 

Teknic_Servo wrote:

Hi fully_defined,

I'm an engineer with Teknic and came across your post. While we're not familiar with the exact board and pinout, the ClearPath wiring makes sense. (Good suggestions PCW)

If you encounter any problems or have other questions, please reach out directly at 585-784-7454 or teknic.com/contact/.

Best regards,
- Aaron B. Teknic Servo Systems Engineer
 

Would you mind taking a second look? I have updated this post, and the image at the top reflects my current understanding of how to wire this. I think the only question relevant to you now is: now that I am powering the field inputs with 24v, can I get away with daisy chaining hlfb to save on inputs? I thought I recalled hearing that this is the preferred Teknic method, but I can't find anymore where I read that.

In this post, the OP said he figured it out and then the thread went cold. People had more questions that were unfortunately never addressed again: www.forum.linuxcnc.org/10-advanced-confi...fb-mesa-7i76e#114031

The purpose of this thread (the one you're reading now) is to create a definitive resource for myself and others to refer to later.

I don't think there is a way to write from LInuxcnc to the MPG Screen. I think it must use the USB for that.
As far as the wiring goes, the circuit diagram on the receiver is all you need as each part is a seperate set of pins.
The estop is designed to be standards based with two redundant circuits but it works for a single sided estop as well.
You used to have to ask for a 5 volt encoder for mesa but now I think there is a switch to select between 5v and 24v on the board.
I always have used the digital I/O for axis and jog speed select to save pins (with a MUX8 or MUX4)

This recent config I did uses the same pendant and there is a seperate hal file and also a custom component to manage the three jogging buttons
github.com/rodw-au/showstopper

 

timo

Thank you

Did you have a look at this?

linuxcnc.org/docs/html/examples/mpg.html

This gave me the basic idea, and then I could change the *.hal according to the requirements.
To me it looks that this wireless thing just connects to the machine like a normal wired device.

I am not using an "official encoder input" for the MPG just normal inputs were doing the job, So I did not change the bitfile on Mesa card plug and go kit.

Hi Rodw

I purchased the MPG pendant i think it might be the same as yours, although this has the screen.

www.aliexpress.com/item/1005002095130699...n.498.21ef1802xJ8JwX

I have been trying to find the post in the forum in which you discussed this so that i may add to it.

I purchased a 7i96s with a 7173 and a 7i95T. I will porobably go with the 7i95T as it has lots of I/O for future expansion on my CNC and some planned projects i would like to add to my CNC.

Im still new to CNC although i have been involved with 3D printing since its inception, which gives me some transferrable skills. Im an electrical engineer by trade so although a steep learning curve, im sure i will succeed in my venture.

The reason for my message is the pendant i bought i chose as it has the STWGP interface for connecting to my 7i95T.

Would you have a wiring diagram you used for your connections between your 7i76E and the STWGP.

Im just striking up a conversation with the manufacturer of the pendant and he has asked for a wiring diagram to check its suitablility.

I was hoping if you dont mind to use your connections as a base for my wiring scheme.

Anything further you can add or setup files would be greatly appreaciated, or if in the linuxcnc domain a link if you wouldnt mind.

Kindest regards
Andy

micha-cnc post=301075 userid=31321Hallo Andi,
krankheitsbedingt muss ich leider meine beiden Mesa Karten 7i76e und 7i85 abgeben.
beide sind neu und unbenutzt
bei Interesse bitte ich um Kontaktaufnahme mit mir
Gruß Michael

Danke für deine Antwort habe sie leider jetzt erst gelesen... Ich habe meine Karte reparieren lassen können. über eine ersatz denke ich noch nach, kommt auch immer auf den Preis an

tommylight wrote:

Does the 7i76E have field power ?
There is field power. Single power supply for it and VIN, of 12V. Everythng performed well before new debian version use .

Does the 7i76E have field power ?

It has been done before. Ethercat is really just a way of controlling your motors and I/O so it does not change anything or prevent you from building a plasma table.
Choose a plasma cutter with a proper CNC interface and voltage divider that does 20:1 or 30:1 division
You will need an Ethercat I/O module for inputs and outputs.
Torch voltage sensing is something the 7i76e/thcad combo does well. the THCAD has a 0-10 volt range with 500volt overvoltage protection
In an Ethercat environment, I would look for a 0-10 volt Ethercat analog input module that has overvoltage protection to 500 volts.(not hard to find)
To give QTplasmac the voltage output, you should be able to scale the voltage using the QTplasmac voltage scale settings.

Another probably more costly way would be to buy an Ethercat encoder input and attach a thcad to it.

Advanced options would be to home using the drive internals and implement torque mode homing to eliminate the need to wire home switches. This would require a custom homing module in linuxcnc. I am not sure if gantry homing would be supported.

Hey Guys,

I have retrofitted a lathe and two Bridgeport Interact Mills using Mesa 7i76e's.  I am happy with the 7i76e and pncconf but due to their availability (or lack thereof) I am considering doing my new 'from-scratch' plasma table build using an Ethercat interface. 

My question is this: If I go down the Ethercat path will I be able to re-use all of the good work that has been done in the plasma area or will I be doing custom builds?  More specifically can I set up a plasma system using Ethercat by modifying .ini and .cfg files?  I am willing to recompile some fork of the main line of development but I don't really want to be on the 'bleeding edge' of the development effort.

Thanks in advance and Happy Thanksgiving!

JH