Any Info for NND Nakanippon Robot Arm (Small)

Dear All

I am looking for information and particularly software to run an old NND Nakanippon Electric Co's 5 axis robotic arm. It was painted bright orange by the factory and consist of

1. 5 axis arm
2. Servo control box
3. Teaching pendant

The servo control box has a 25-pin RS-232 interface. I am wondering if anyone has any lead to obtaining a copy of the software to run the controls.

A few of the dimensions of the system are as follows:

Learning box

************ Size: 23x10x3cm Weight: 1kg Cable Length: 3m

Digital Servo Amp

***************** Size: 29x19x18cm Weight: 3kg

Robot Arm

********* Max vertical reach: 63cm Max horizontal reach: 46cm Rotation of waist: 270deg Weight: 8kg

Any lead on software or additional information is greatly appreciated.

Kind regards frank