need help with w34s cable

[Marcus von Cube]

(01-25-2014 10:47 PM)walter b Wrote:  (In German math tests, we call that a "Transferaufgabe". It's usually the last problem of the test and the one you get the most points for solving.)

You got me.
I was looking for the word "serial" in the V3.1 PDF in the hope to find this information. The photo shows that the pinout as seen from the back of the calculator is numbered from right to left while the snapshot from the schematics is from left to right. The latter is obviously a view onto the connector, not onto the board.