Best Ethernet Based Board in 2020

EverydayDiesel wrote: The 7I76E card doesnt have anything to do with the 'closed loop/servo' right?
Meaning if a 'step' is missed the 7I76E wont even know about it? The catch-up of the missed steps will be handled between the driver card and the servo?

Yes, and yes.
Although adding a 7i85 card provides 4 encoder inputs, differential with index each, so having close loop steppers is fairly easy. That way knows about missed steps and stops the machine if it can not correct the position inside a set value.

The 7i76e is the one to get for a new build. The D version is active low so its useful for retrofits with that style of wiring.
Straight through ethernet cable is all you need.
Once you get into it, be sure to read up on halcompile. That lets you write a few lines of C whenever you want to do that the standard components can't do or becomes convoluted requiring several standard components, you can write your own components. which are compiled and installed with one line at the command prompt.

if you got a system running just get you a 7i92 and within minutes you are up again on the ETH
if you start over it is as the treads above but consider the mashine needs to the board

Hi
For the ethernet shilding.
Be carefull with shielded cable. If you do not have a very low impedance ground connection you will have those emv currents running between your pc and the 7i76e running over the tiny ethernet shielding wires.
And none of both sides is made for low impedance connection to ground, capable of highe currents.
So better use unshielded and plan a good ground conection with adequate cabling between pc and machine. And no, just the earthing of your current supplies is not enough.
m5c
Mike

Thank you for the replies

I plan on using these power supplies
www.teknic.com/products/servo-motor-dc-power-supply/

One of these motors (they have an API )
Will these SC (software control) line of the teknic work with linuxcnc?

www.teknic.com/clearpath-accessories-guide/

will the 7i76e workr with these motors with the built in controllers or is there another option to look at?

I am thinking

computer --> 7i76e --> SC4-HUB --> servos (with built in controller) [of course also connected to power supply]

Communication Hub for ClearPath-SC Series
Part Number: SC4-HUB
Input: 15-30 volts
Connectors: See drawing
Dimensions, in (mm): 3.56 x 5.31 (90.4 x 134.9)
Certifications: UL, CE (pending)
www.teknic.com/images/sc_hub_lightbox_drawing_3.jpg


EDIT: Maybe i dont need the SC4-HUB at all and the new data flow can be
computer --> 7i76e --> servos (with built in controller)

I can buy these cables to connect the motor to the 7i76e
Controller Cable, 10 ft
Part Number: CPM-CABLE-CTRL-MU120
Connectors: 8-pin Molex Mini-fit to 8-pin Molex Mini-fit (one connector is overmolded)
Length: 3.05 m (10 ft)

This cable connects your digital control signals (from switches, buttons, PLCs, etc.) to your ClearPath motor. The overmolded Molex connector connects to the motor (which allows an IP-65 sealed connection when used with dielectric grease), and the other end can be plugged into a breakout board (or for ClearPath-SC, the SC communication hub), or cut off to create flying leads to allow you to wire into any control device you may use.
www.teknic.com/images/accessories/329_lg.jpg