Understanding CSYS / OSYS commands output to the CL file

Question

I don't understand how the information in the CSYS/OSYS line can be used to calculate an angle.

I have extensive knowledge of our Post Processor and can output a specific set of Coordinates as a G10 output to the controller if I could "Calculate" the position and orientation of the CSYS/OSYS command.

I understand that the following is for NO ROTATIONS and position at X0 Y0 Z0 (A0) (C0)

$$-> CSYS / 1.0000000000, 0.0000000000, 0.0000000000, 0.0000000000, $

0.0000000000, 1.0000000000, 0.0000000000, 0.0000000000, $

0.0000000000, 0.0000000000, 1.0000000000, 0.0000000000

But I don't know how to translate something like this

$$-> CSYS / -1.0000000000, 0.0000000000, 0.0000000000, 0.0000000000, $

0.0000000000, 0.0000000000, -1.0000000000, 0.0000000000, $

0.0000000000, -1.0000000000, 0.0000000000, 0.0000000000

Mathematically into directions

Thanks in advance.

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cfarah · Answer

Hi Kelsey,CSYS is the matrix transformation of the Sequence CSYS with respect to the Machine CSYS (Program Zero).You read them column by column, which means 1,5,9 then 2,6,10 and so on.The first 3 columns are the X, Y and Z vectors of the seq CSYS in Machine CSYS frame (basically the 3x3 rotation matrix). The last column is the translation vector.CSYS is most useful when you want to make use of local coordinate transformation on machines (such as G68) without forcing NC programmers to do difficult manual CL entry. There are many other cases where you want to know this relationship. It is very useful.OSYS happens only when outputting multiple operations in a single set output. It is only useful in very rare cases, such as inventive ways to support U-axis turning heads on milling machines. I don't remember ever using it for anything else.Also, you have to make sure you can process SS-> CSYS . By default, post-processors ignore $$ as comments.Hope this helps,Charles

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