7i77 TTL encoder

Hi
I use 7i77 for feedback control with encoder motor signal succesfully
Now I try use feedback with linear scale for Y axis
I wiring  TTL signal from linear scale A signal, B signal to Encoder 03 slot (TB4 terminal)
I can open Gmoccapy but when JOG DRO of Y axis not change i think problem from linear scale

I have question ,TTL can work with 7i77 ?


 

You also need to make sure that the 7I77 encoder inputs are jumpered for TTL mode.
For encoder 03, this means jumpers W18,W20,W22 must be in the left hand position.
(default is differential mode = right hand position)

Thank you for fast respond.
Yes I use Encoder.03 I think correct (Thank you for confirm me MR.tommylight)

Thank you for advice MR.andypugh  , Tomorow I will try your solution

Ah.... I'm not sure about Jumper W18 W20 W22 Tomorow will let's check again Thank you MR.PCW

I have second before morning , Possible for..... cable of Linear scale long ... about 5 meter and voltage from terminal Pin6 of TB4  +5V drop  and can't detect signal from linear scale (I use it's for power to linear scale) ?

Thank you,
Asis .

 

Good morning
I recheck wiring and jumper.
Now I change jumper from right to left for A and B encoder done.

Now working,

super thanks everyone DEV.
Asis,

 

Hi Tommy
I have last question
First time i use stepgen from 7i96s and use encoder feedback from encoder motor 2,500 ppr
my ball screw is pitch 5mm
encoder is differential  = 2500*4 = 10000 /rev
1mm = 10000/5 = 2000 encoder scale   
ENCODER_SCALE = 2000


Now  i use glass scale is "single ended" right ?
my scale resolution is 5micron   then 1mm = 1000/5 = 200 ppr

I have question...
How Multiplier for of ppr Glass scale(200ppr / mm.)   *2 or *4  or *1   ENCODER_SCALE = ??
because it's "single ended" I don't know *1 *2 or *4

Thank you,
Asis
 

The single ended vs differential option is only an electrical interface setting
Its not related to the count scaling at all.

Normally you use 4X quadrature which means you get 4X the number of counts
as the number of lines. That is if the scale has 200 lines per mm, the scale would
be set for 800 (counts per mm)