Has anyone repaired or replaced a Heidenhain encoder cable? Specifically, my encoder is an ERO 115 125.
Background: In a separate post, I've been outlining and discussing creating a 4th axis ... and my travails with adapting the encoder to work with my rotary table and my Heidenhain 151B. It now works! My latest task has been to build a jumper / internal-extension cable for the encoder, about 3-1/2 feet long, with a 9-pin Heidenhain female bulkhead connector so that I can remove my 4th axis - disconnecting it from the Interact via bulkhead connectors - and reconnect when I'm ready to use it again. The other end is an equivalent 9-pin male connector going into the controller.
Unbelievably, to me, I bought correct 9-pin connectors (they screw into controller and cable from encoder perfectly), I wired them per the attached print using shielded CAT 6 (four (4) twisted pair with shield), rung the jumper / internal-extension cable out with a multi-meter (continuity pin-to-pin, no cross talk or shorts), and - low and behold - the system doesn't recognize the reference switch when the jumper / extension cable is in place. By removing the jumper cable, and connecting the encoder directly to the controller, it works fine recognizing the reference switch.
What could be going wrong? Based on earlier posts, I'm assuming its somehow not getting the reference pulse through the extension cable - these are pins 7 and 8. There are no errors (gross or otherwise) indicating poor signal or loss of power to the encoder. The shield in the CAT6 cable is connected via pin 9.
Has anyone tried to repair a Heidenhain encoder cable previously and have any idea what's going on?
Thanks!