Replacing Advanced Motion Controls "brush type 12A8 with "Axcent" amplifier

Yes, that sounds like the machine enable is working and correct.

The motor runs away because there is no encoder feed back (or it isn't being seen) and the drive and PID are not tuned.

Many thanks, Todd!! Attached are the .ini & .hal that I was using.

If you have the encoder connected to the encoder.00 inputs on the 7i77, I have no idea why you can't see any movement of the DRO. Double check your wiring.

I thought at one point you had the encoder feedback working (with the old encoder). I don't know what you may have done to cause it to stop working, or why you felt it necessary to replace the old encoder. (Did you do something to damage the old encoder? And if so is it possible what ever damaged the old encoder also damaged the 7i77?)

Todd, you have been so very helpful, and I an ever so grateful. If you feel that the 7i77 needs replacing, I will get that ordered. I need the 2nd opinion to be confident. many thanks

Edit: 7i77 card is on order, 2 day shipping option was used.

I don't think it is time to just give up and order a new card. I think we first need to figure out what is going on. There may be nothing wrong with the 7i77, or it does have 6 encoder inputs if you don't need them all. Even if you did hurt the 7i77, you should try to figure out what you may have done to cause it's demise (so you don't do it again.)

Maybe Peter from Mesa will chime in with some diagnostic help and these cards are often repairable and Mesa can usually repair/exchange a damaged card for less than the cost of a new one.

Many thanks, Todd!!! The order is on the way, I expect to see my 7i77, next week. I will gladly work on the current 7i77 card, I have not pulled it out of cabinet. Many thanks, Todd, for your expertise.