Home Index 7i96s can't detect Signal

Hi
I use 7i96s for Lathe
I use encoder for X-Axis feedback control.
A,B phase encoder run good and can feedback control.
then I change in ini file  change to  HOME_USE_INDEX = YES  , for use home index with Z-phase encoder.
I click home Z use mechanic home switch its work good.
I click home X use index home when x axis touch home switch will back off but it's not stop it's keep walking.(before change to index home i use home switch good work.).

I try use osihoscope check Z phase , scope can detect 1 pulse every 1turn motor.
I try open Hal scope in linuxcnc open signal   hm2_7i96s.0.encoder.00.index-enable  I run x axis and observed but no any change.

please help what i'm setup wrong in hal or ini file please.

Thank you 
Asis,

 

 

In general its not likely that you can detect the index signal with halscope
since it only samples the hal pin at 1 KHz and the index pulse will tend to
be much shorter.

The way to test index is to  (with halcmd -kf):

halcmd: sets x-index-enable

Then monitor x-index-enable (with halmeter or halshow)
to see if it gets cleared at the Index position of the encoder
when the encoder shaft is rotated slowly.

Hi MR.PCW
I Try open X-index-enable on hallshow
all setting in .hall and .ini same in first file
seem x-index-enable change status from red to yellow after touch home switch and back off in second.
But Servo X axis not stop just go away.
Please see in clip.
youtube.com/shorts/DYzESCKYgpI?feature=share

Servo tuning is wayyyy off, both axis are moving more than 1mm without correction from the controller, try adding more P.

Is the index signal single ended or differential?

tommylight wrote:

Servo tuning is wayyyy off, both axis are moving more than 1mm without correction from the controller, try adding more P.

Tomorow I will try it
Thank you MR. Tommylight.

PCW wrote:

Is the index signal single ended or differential?

Hi MR.PCW
Differential encoder signal.  (from 26ls31 IC)
 

Can you temporarily disconnect the encoder, jumper index for single ended,(W1 left)
and see if grounding the index+ input changes the state of the index pin in hal?

Also can you read the firmware pinout?

mesaflash --device 7i96s --addr [ip-address] --readhmid > pinout.txt

and post pinout.txt here

[ip-address] is 192.168.1.121 or 10.10.10.10 depending on 7I96S address jumpering

PCW wrote:

Can you temporarily disconnect the encoder, jumper index for single ended,(W1 left)
and see if grounding the index+ input changes the state of the index pin in hal?

Also can you read the firmware pinout?

mesaflash --device 7i96s --addr [ip-address] --readhmid > pinout.txt

and post pinout.txt here

[ip-address] is 192.168.1.121 or 10.10.10.10 depending on 7I96S address jumpering

Hi MR.PCW
You mean for I try to change signal of index encoder from differential to singlw end right ?
I check in manual , explanded about W1,W2,W3
W1 = A
W2 = B
W3 = Index
please make sure for me again change W1 or W3 to left ?

Thank you
Asis,

 
 

this pinout.txt
and I try
 - W1 to left and try home with index   result : same old
- W3 to left can't stop Jog and I think W3 is A encoder now I chnage back to Right position