Siemens SINUMERIK 840D sl Programming Manual page 208

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Table of Contents

6.1 Coordinate transformation via frame variables

Possible frame variable:

• Basic frame (basic offset)

• Settable frames

• Programmable frame

Value assignments and reading the actual values

Frame variable/frame relationship

A coordinate transformation can be activated by assigning the value of a frame to a frame

Example: $P_PFRAME=CTRANS(X,10)

Frame variable:

$P_PFRAME means: current programmable frame.

CTRANS(X,10) means: programmable zero offset of X axis by 10 mm.

Reading the actual values

The current actual values of the coordinate system can be read out via predefined variables

in the parts program:

$AA_IM[axis]: Read actual value in MCS

$AA_IB[axis]: Read actual value in BCS

$AA_IBN[axis]: Read actual value in BOS

$AA_IEN[axis]: Read actual value in SZS

$AA_IW[axis]: Read actual value in WCS

Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0

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