Encoder myRIO

[tomawa003]

Hello.  I have just started working with LabVIEW and myRio( I've 1900). I want to acquire data from encoder  Lika I-41  (http://www.lika.pl/pliki_do_pobrania/QR%20I28_I40_I41%20(2).pdf), and I want to send signal in loop every 10ms to make a picture. I wanted to do like in this video https://www.youtube.com/watch?v=W1rK3GhOjPQ , but I don't know where and what plug in. But I got same problem with my step motor Ihe will propel my board to rotate )http://www.robot-italy.com/en/stepper-motor-nema-17-48mm-42byghm809.html
I would be vert gratefull for any help/tips.

[tomawa003]

I just saw that i gave bad link to encoder, here u have it, http://www.lika.biz/    ->Products -> Rotary encoder ->I40-I41  and there you got manual.

[Martiko]

Hi tomawa003,

welcome to NI Forums.

From what I see I guess You are looking for a way how to connect encoder to Your myRIO. Since You are refering with video link I guess the video tutorial Rotary Encoder Demo might be the right choice for You. It is video version of NI myRIO Project Essentials Guide. The Guide is free downloadable pdf where You find basic projects with myRIO. Also the motor connection project is to be found there.

Hopefully that will help You.

[tomawa003]

Yes it's helpfull, I will try it on Monday.  Can you tell me is cable Z or O  is on this guide  cable COM?   My encoder has negative /A, /B and /Z , so will someone tell me what do they do ?

[Martiko]

Hi,

You can take a look in manual or try to google the quadrature encoder keyword. It will offer You some basic information about A, B and Z channel. I can share a fundamentals link which I found on Google:

Encoder Measurements

There You can read that A and B are the actual encoding signals shifted one from another so You can determine the direction of rotation and channel Z is usually for calibrating the absolute position.