Change C0 in middle of program

[#1]

This questions is both for programming and for G-Code machine simulation...

I am looking for a way to change the C0 location in the middle of a program. The process is.... There is a locating pin in a round fixture, and for G54 and G55 I want C0 to be with the pin at the 12' oclock position. For G56, G57, & G58 (which are tilted up at A-90 on a trunnion) I want C0 to be with the pin at the 6'oclock position.

I would normally program with the C0 at the same location throughout the program, but we have some legacy parts that were programmed in the manner stated above and I am trying to set-up G-Code Simulation for them. I also would like to be able to create a program from scratch in this manner because some people prefer it setup that way.

NX 9.0.3

[#2]

by a Coordinate System Conversion Functions (optional)

Parallel Shift and Rotation of Coordinate Systems (G11,G10)?

[#3]

Holloman,

Thanks for the reply, but I am not understanding what you are saying. Are you talking about in the G-code itself? I am looking for ways to do it in NX, both in the CAM operations side and in the Machine Simulation side. Sorry if I misunderstood your answer.

[#4]

In NX: Set up a (geometry group) MCS object with the correct origin/orientation.

But somehow you'll have to tell the machine control that "C0" is not where IT thinks C0 is, hence the need for G10 (or whatever) in your code.

Ken