Frage wegen Spindelencoder an 7i76

If A does not change, that sounds like there is a problem in the "A" encoder signal path
This might be:

1. Encoder connections wrong.

2. Bad 7I76 encoder input

3. Bad / loose DB25 cable

4 7I92 bad/damaged input

Also which pin does not change? A or B?

earlier post:

 When the X-axis moves, the yellow LED at A changes constantly between on and off, B remains on, Count changes between 0 and -1

latest post:

here “Count” only changes between 0 and -1, “B” flashes when I turn the encoder and “A” lights up constantly in the HAL show


 

If I plug the complete connector, to which the encoder is connected, from the 7i76 into the 7i85, then it works.
So it can't be the cable or plug.
Possibly the input of the 7i76 is not OK.

If you figure out which input does not work, if you have a voltmeter or just an LED
you can trace the signal at the 7I76's  DB25 connector to see if the issue is with the
7I76 or 7I92.
 

PCW wrote:

If you figure out which input does not work, if you have a voltmeter or just an LED
you can trace the signal at the 7I76's  DB25 connector to see if the issue is with the
7I76 or 7I92.

 

 

Can I plug the 7i92TM directly into the 7i76, i.e. the DB25 connectors into each other? Perhaps the ribbon cable or the connection to the plugs is defective.

Yes, you can plug them directly together.

Thank you, I'll try it tomorrow