AzEq5 mount control with a Nexus pro DSC- getting it to connect

[the_chemist]

Hey everyone, I got a Nexus pro this summer to use with my Dob and it works great. I saw in the manual it can control an AzEq5 mount, so I ordered the cable from astrodevices, but I can't get it to work with my mount.  I have the RJ end plugged  into the mount, the USB plugged into the Nexus, and I followed the set up instructions in the manual for setting the encoder steps and the USB communication settings- but no luck, when I do an encoder test I get no response.  Anyone else have this problem, and if so how did you fix it? I have an email into Astodevices, but they haven't gotten back, and I'm guessing theyare slammed like everyone else.  For what its worth, my mount is around 3-4 YO, and is the EU/global version which was purchased in the EU and brought to the US, don't know if there are differences in the firmware or something.

thanks,

Eric