Yeah the motor cables are the only thing connecting the encoders to the control box as well. That's why I suspected that connection. Especially after you said the LED was blue. On the 1100 there's an extra box things connect through, which the design of the Mach 2 eliminates the need for.
From: firstname.lastname@example.org <email@example.com> on behalf of David Johnson <dajohns37@...>
Sent: Sunday, March 28, 2021 7:16 AM
To: firstname.lastname@example.org <email@example.com>
Subject: Re: [ap-gto] Problem with Mach2 #Mach2GTO #APCC #Absolute_Encoders
In hindsight, I should have worked on the motor cable issue more first. I spent a lot of time trying different USB setups because it was showing a communications problem, but since the keypad functionality was also affected, I should have realized it wasn’t a computer-to-mount problem earlier than I did. Anyway, I just hope it might allow other folks to avoid the wasted time I spent. Make sure your motor cables are connected snugly every time!