Siemens SINUMERIK 840Di Function Manual page 792

Detailed Description
2.4 Frames
2.4.6.5 Complete basic frame $P_ACTBFRAME
The chained complete basic frame is determined by the variable. The variable is readonly.
$P_ACTBFRAME
corresponds to
$P_NCBFRAME[0] : ... : $P_NCBFRAME[n] : $P_CHBFRAME[0] : ... : $P_CHBFRAME[n].
Programmability of the complete basic frame
System variables $P_CHBFRMASK and $P_NCBFRMASK can be used to select, which
basic frames to include in the calculation of the "complete" basic frame. The variables can
only be programmed in the program and read via the operator panel interface. The value of
the variables is interpreted as a bit mask and specifies, which basic frame array element of
$P_ACTBFRAME is included in the calculation. $P_CHBFRMASK can be used to define,
which channelspecific basic frames are included, and $P_NCBFRMASK can be used to
define, which NCU global basic frames are included in the calculation. When the variables
are programmed, the complete basic frame and the complete frame are calculated again.
2-62
Axis Types, Coordinate Systems, Frames (K2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0