I bought my 3 990Hs a few months ago and have them hooked up to my servos. I have US digital encoders (e5S-500-375-EG) and they are single ended TTL units, from what I am understand. I printed out the pdf file to hook up the encoders and I it shows a pulldown resister on pins 3 and 5 (not A and not B). Now they have changed their website and they have a lot more info on it. The diagram on the website shows a pull UP resistor for pins 2 and 4 (A and B) and no connections for 3 and 5.
My Z axis servo is acting funny (jumping around and then going to the end of travel) and when I go into the tuning program, the encoder count/position jumps around. I'm thinking I also have a noise issue, but I would just like to get the general wiring right in the first place. I may have to convert my setup to a differential encoder setup, which I *would* have done in the first place if the website info was up at the time a couple of months earlier.
Anyone have some input they could share with me? It's frustrating to have a machine all put together and ready to go, but unusable. I need the machine to be reliable!
Thanks!