Position info for external axis (Using S4 in Robotstudio 5)

TSTL

Hi,

I understand that it is possible to use an S4 robot setup within Robotstudio 5. From what I understand I need to manually create the robot within Robotstudio, which is fine as the robot I use (IRB2400) is available no problems. The issue I have is that I use a Robax external axis (rotary table with a tilt axis), how do I find out the precise location of this relative to the robot? I have a full backup of all of the files off the robot and I had been told it should be within MOC.cfg but I cannot see it within there. 

Any ideas what I am looking for or am I looking for it in the incorrect place? Or do I need to use a pointer mounted to the robot to work out the position, if so what is the best method for this.