Mikron WF 40 P Retrofit - Gearbox Logic and Document Hunt (WF 40 C vs P)

Greetings gentlemen,

Our team at EreborCore (based in Peru) recently acquired a legendary piece of Swiss iron: a Mikron WF 40 P from the 1990s. Mechanically, the machine is in pristine condition (beautiful Meehanite cast iron, silent ball screws), but we are doing a complete electronic retrofit to bring it into the 21st century.

First of all, I want to give a massive shoutout to user @Vojta333. We found his Google Sheet detailing the 8-bit logic for the 21-speed gearbox on the WF 40 C, and it is a masterpiece of reverse engineering. We already have the S and M bitcodes (J2/2 to J2/9 pinout) ready to be integrated into our controller's custom Ladder/PLC logic. 

However, we have encountered a historical "ghost" regarding the "P" variant, and we would highly appreciate your collective expertise on two specific matters:

1. The Mystery of the "P": Does anyone have the official electrical or mechanical manuals specifically for the WF 40 P? While the "C" (Contouring) version is widely documented, official schematics for the "P" version seem extremely hard to find. We would love to know the exact technical differences.

2. Gearbox Actuator Design: On our WF 40 P, the shifting mechanism on the side of the head looks like a small, enclosed manifold/box. In some older WF 40 C videos, the mechanism looks slightly more exposed. Does anyone know if Mikron switched to a compact hydraulic shifting manifold for the later "P" series, or is it just a cosmetic/protective cover for the same relay-driven mechanical array?

We are completely modernizing the system: we are getting rid of the old analog electronics and installing a brand new, fully digital SZGH controller along with modern AC servos and drives. 

We are extremely excited about this project and we intend to fully document and share our retrofit journey here with the community. Any advice on the documentation hunt or the gearbox manifold would be gold to us!

Best regards,
Daniel
EreborCore Team