Interfacing with Hanning motor and control

HI All,I am trying to revive an old CNC Wabeco mill, My next step while I wait for new drivers to show up is to interface with the motor/spindle control. There seems to be a lot going on to control the motor, so i am hoping that I can connect to this to control the spindle speed and direction.I cannot find any information online about this setup and I have emailed Hanning but received no response. I would like to find out the pinouts for the 9 pin connector, and all of the other unused connectors.

seems like a decent solid motor and control, else I will just control speed manually, maybe install a tachometer somewhere to it too.

 

 

 

Behind the speed control knob, hoping there is a way I can connect to the RS232 (?) or there are a lot of connections that are not being used, else i need to find a way to emulate the Potentiometer and the fwd/rev switch. 
 



Connects to more electronics via another 25 pin
 

more electronics above the motor, appears to read the speed of the motor as well,
 

The 9 pin connector is likely some serial interface (modbus?)
 
It is currently using what looks like a standard potentiometer +FOR/REV
interface. These can connect to most analog spindle interfaces on parallel
port and other LinuxCNC interface hardware.

This is all I could on the drive. Not much help.

That looks like the right setup, just need to find the right one for the motor I have, which is much older, (around  the year 2000 I think)See attached, this is the closest I could find, but its hard to determine if the diagram is for the board I have, there is the correct number of connections however, that is promising.

Current Config, 
 


 
 

Bummer, I'll keep searching. how is linuxCNC able to control a potentiometer input? i must be missing a keyword, cant really find an answer. Thanks again for your help.

I have made some more progress with this, I received a reply from Wabeco, they sent through the following diagrams, however i would still like to know more, (i.e. if there is possibly an RPM output and/or other means of control)

They also mentioned to contact MOBASI inn regards to a control software and motor wiring, ill give that a go

One is for the control panel that is visible behind the speed dial, the other is for the board on the motor.