Encoder wiring schematic help

Hi,

I have a minertia motor mini series T03L -DP11 servo motor with
encoder. I can't find a wiring schematic for the encoder. It has a
round multi conductor wire with no plug or connector. Red, orange,
black, grey, grey with black stripe, white with black stripe, bare
shield wire. And something I have not seen before... a "wire" with no
wire in the middle.

I looked inside and it has two channels and an index on the encoder
wheel. I checked Yaskawa and could not find any info on the encoder.
Nothing on a google search...

Any ideas how to connect this?

Thanks