Glasmaßstab EIA-422 an Mesa 7i85 (S)

I think I'm a little confused today. The card is installed upside down, so the jumpers are in the down position.
Now I don't know what to do next.

Can you post your complete hal and ini file set here?
Then I can try an duplicate your issue


Also if you know you have differential outputs on the scales,
you should leave the 7I85S jumpered for differential inputs.

Typically TTL encoder signals will not work if the interface card is
jumpered for differential signals, but differential encoder signals
will work if the interface card is jumpered for TTL signal



 

What's going on with this site? It takes forever to load, or it's not even accessible. I've been trying to reply here for 35 minutes.

@tommylight
All other changes are executed, so why should it be any different with the index signal? Yes, it should be executed as ROOT user.

@PCW
 I also set the jumpers to TTL and tried it out, but unfortunately the result is the same.
Here are the HAL and INI:
 
 
 

When, you say  "unfortunately the result is the same" , it would be helpful if you
specified the actual results as there have been at least three separate issues discussed here.

@PCW
I actually only talked about one problem, or rather, for me it was only one problem, namely that no setting leads to the index signal being recognized or responded to.
I tried changing the jumper settings to TTL signal to see if that would trigger a response, but unfortunately that wasn't the case.
For example, I went through all possible combinations from 000 to 111 to see if anything changed:

setp    hm2_7i92.0.encoder.00.index-invert 0
setp    hm2_7i92.0.encoder.00.index-mask 0
setp    hm2_7i92.0.encoder.00.index-mask-invert 0

No difference was noticeable with either the RS-422 or the TTL signal.

@tommylight
That's right, I'm not logged in as root; I just checked again, but you shouldn't do that under Linux anyway. Anyone working on the machine could destroy the entire system. Besides, everything is running smoothly except for the problem with the index, and it's not due to permissions.
I don't use a parallel port; a 7i92t + 7i76 + 7i85 is built in.

However, I have since discovered that there are often problems with the DC11 GMS and the index signal; it is either very weak or not output at all.
I probably have two such units. But since I don't want to waste any more time on this problem, I'll leave it alone and work with it as it is now.
Thank you very much for your support, and I'm glad this forum exists.

Greetings
Olli

 

Ist ein Oszilloskop vorhanden? Falls ja, einfach ans Glasmaßstab anschließen, auf single shot stellen, Triggerspannung einstellen und die Achse joggen.
Ansonsten kannst du probieren mit dem Signal einen MOSFET und damit eine LED zu schalten (mit Diode in Serie am Gate, damit er auch geschaltet bleibt). Wenn bekannt ist, wo das Signal ist, kann man die Stelle anfahren und die genaue Spannung mit dem Multimeter messen. 

Ul wrote:

Ist ein Oszilloskop vorhanden? Falls ja, einfach ans Glasmaßstab anschließen, auf single shot stellen, Triggerspannung einstellen und die Achse joggen.
Ansonsten kannst du probieren mit dem Signal einen MOSFET und damit eine LED zu schalten (mit Diode in Serie am Gate, damit er auch geschaltet bleibt). Wenn bekannt ist, wo das Signal ist, kann man die Stelle anfahren und die genaue Spannung mit dem Multimeter messen. 


 

Nein, ich habe leider kein Oszilloskop und selbst wenn, es würde ja nichts ändern, wenn das Oszi ein schwaches Signal erkennt, aber LinuxCNC nichts damit anfangen kann weil es einfach zu schwach ist.
Ich habe mir einfach die falschen GMS ausgesucht, hätte ich da vorher danach recherchiert, dann hätte ich wohl andere genommen.

Es ist wie es ist und es bleibt auch so

Danke für den Tipp

Gruß
Olli

Alles klar