Predefined Frame Variable ($P_Bframe, $P_Iframe, $P_Pframe, $P_Actframe) - Siemens SINUMERIK 840D sl Programming Manual
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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
$AA_IW[axis]: Read actual value in WCS
5.1.1
Predefined frame variable ($P_BFRAME, $P_IFRAME, $P_PFRAME,
$P_ACTFRAME)
$P_BFRAME
Current basic frame variable that establishes the reference between the basic coordinate
system (BCS) and the basic origin system (BOS).
For the basic frame described via $P_UBFR to be immediately active in the program, either
● you have to program a G500, G54...G599, or
● you have to describe $P_BFRAME with $P_UBFR
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Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
Coordinate transformation (FRAMES)
5.1 Coordinate transformation via frame variables
317
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