Set up using AMC AB15A100 drives, brushed DC motor Prototrak Plus with Encoders

If the cable came with the Plug and go kit I'm sure it's a good cable.

Have you moved any of the jumpers on either card, or are they all in their factory default positions? If any have been changed, which ones? At any point have you tried to re-flash the firmware of your 5i25 card?

I have never re-flash any card. The jumpers were set as per the "back EMF" original settings. I will get complete jumpers setting & post. PCW, thank you for your help. I will remember that for in the future.

Many thanks for all the help.

Edit:Jumpers: This group of jumpers is close toward the (P1 HOST CONNECTOR): 1,4,10,12,13,15,17,19,21
This group of jumpers is away from the (P1 HOST CONNECTOR): 2,3,5,6,7,8,9,11,14,16,18,20,22 (22 Total)

The best news of the day is the USPS is doing outstanding delivery, today!!! Expected Delivery Between 9:15am and 1:15pm

New cards arrived. The W1 jumper on 5i25 card goes from the factory/delivered position to the position to the outside edge of the card. This only jumper to change? I plan to try only 5i25 card, see what error code, then replace 7i77 to see change. 7i77 card jumpers are in prior post.

Many thanks!

Installed both new cards, red LEDs on both drives go green, one motor is low speed running, other no motion, 1 red LED goes to blinking green LED on 7i77 card after power suppled, all others yellow. Shows Linuxcnc logo screen with DRO moving as per motor. If you use F2 the motors will stop for just an instance, joint one following error shows.

Many thanks!!

Edit: This is the halrun pin out attached.

Many thanks, PCW, andypugh, tommylight, Todd Zuercher, piasdom & all the others that make this the most informative forum on the web. I am ever so grateful for your help & guidance, I pray for your success. Many thanks!

So have you gotten your machine running?