Schaublin 125-CNC retrofit.

Hi Tommy,
Thanks for checking in,.
What type of hal sensor?
- Unknown. Whatever Schaublin bought in 1980.

What output does it have?
- It seems to be a DC analog output. In the video, you will see that the output voltage varies on magnetic position (strength), peaking at about 4V on a 5V PSU.
Might need a resistor as pull up or pull down.
- It seems to sit nicely down at about 0.1V when no magnetic field is present. I dont know what to do about a resistor.
Some give variable voltage on the output depending on magnetic field.
- Yes, the output is analog.
Mark

Thanks for spotting that. That is the easiest, and most likely trouble shooting step, so I will try that after the F1 GP is over.

Mark

I am an idiot. It was pointed out that the Mesa manual states that Bank B (TB2) needs at least 8V as it also powers the guts of the card. I checked and had the 24V on that bank, but also had gotten confused and had the Hall sensors on that bank. Once I switched them to TB3, the Mesa card can read them fine.
Mark

Starting to look like a lathe again.

I have a question with respect to wiring pass through encoder signals to the 7i85.

The JMC driver outputs the differential signals from the motor encoder :
 

... and I would like to pass that signal through to LinuxCNC on the 7i85:
 

I am a little uncertain of the GND signal on the JMC driver. As drawn that looks like it is just the cable shield earth. I take it the 7i85 needs the TB3-3 GND reference signal for the encoder right? I cant upload the full manual here, as it exceeds the forum limit.
www.jmc-motor.com/file/1806080392.pdf
Mark
 

Yep.  Six conductors, plus a shield.

I believe the OCZ/GND connection is a bit of a red herring in your case.  Pretty sure that's for a single-ended output; probably used for a home-to-index feature for a controller that can't take differential inputs.

On the other hand, I'm mildly curious what an electric angel is... Incremental encoder Z pulse electric
angel
 

Thanks guys. I wasnt sure if the differential signals were each referenced to gnd or formed a circuit.

Yeah, that manual has some high grade Cringlish