My 7i76e Connection Sheet

Norbert you have done a great job. I have attached a diagram showing PNP and NPN three wire sensors hookup to a mesa 7I77 card, I think it would be great to add someting similar to your document to help others.

Hallo Benb,

thanks for sharing that information, IMHO it is allready included in the latest version of the document.

Just as 4 wire version with one wire unconnected.

Norbert

I just noticed a typo with the MPG encoders.

enc1.count and enc0.count are the wrong way round.

It would also be worth noting that the earths on the field power and 5V sections need to be tied together.

eg. TB3.23 needs to be connected to TB1.8

This would not be an issue the way you have powered the board in your diagrams but I was using a separate 5 volt power supply at P3. Somewhere I found a post by PCW about this that got my encoders working

Hi rodw,

thanks for reporting the error in my sheet.
Attached the corrected release

I did not mention to connect together the grounds of the power connections, because if you use my connection sheet it is not needed.
Please Note, if you use two power supplies, you need to change Jumpers W1 position!

Norbert

Thanks, If you had published this a week or so earlier, you would have saved me the cost of the power supply
The advantage of using 2 power supplies is that this does not apply.
"When the on card regulator is used, the maximum power available from the encoder, serial, and 26 pin expansion connectors is 2A total."

The only thing that I've noted is missing is connecting a THCAD for plasma
TB3.01 -> THCAD.P1.1 +5 V
TB3.07 -> THCAD.P1.2 FOUT+
TB3.08 -> THCAD.P1.3 FOUT-
TB3.06 -> THCAD.P1.6 -5 V

Of course, there are other pins available to obtain 5 volt power for the THCAD

Hallo rodw,

thanks for the Information.
The Pins you mentioned are metioned in my config for other purpose.

Norbert