Siemens SINUMERIK 840Di Function Manual page 793

After RESET and in the default setting, the value of $P_CHBFRMASK equals
$MC_CHBFRAME_RESET_MASK and the value of $P_NCBFRMASK equals
$MN_NCBFRAME_RESET_MASK.
$P_NCBFRMASK = 'H81'
$P_CHBFRMASK = 'H11'
2.4.6.6 Programmable frame $P_PFRAME
The programmable frame is only available as an active frame.
This frame is reserved for the programmer.
The programmable frame can be retained on RESET using the machine data setting
MD24010 $MC_PFRAME_RESET_MODE = 1.
This functionality is particularly important if one wishes to retract from an oblique hole after
RESET.
MIRROR
Previously (up to SW P4), mirroring of a geometry axis had been related to a defined
reference axis using machine data
MD10610 $MN_MIRROR_REF_AX.
From the user's point of view, this definition is hard to follow. When mirroring the z axis, the
display showed that the x axis was mirrored and the y axis had been rotated about 180
degrees. When mirroring two axes this became even more complex and it was no longer
easy to understand, which axes had been mirrored and, which had not.
With SW P5 and higher, there is the option to clearly display the mirroring of an axis.
Mirroring is then no longer mapped onto the mirroring of a reference axis and rotations of
other axes.
This setting can be configured using the machine data setting
MD10610 $MN_MIRROR_REF_AX = 0.
MIRROR and AMIRROR are used to expand the programming of the programmable frame.
Previously, the specified value of the coordinate axis, e.g., the value 0 for MIRROR X0, is not
evaluated, but the AMIRROR has a toggle function, i.e., MIRROR X0 activates the mirror and
a further AMIRROR X0 deactivates it. MIRROR always has an absolute effect and AMIRROR
an additive effect.
Machine data setting
MD10612 $MN_MIRROR_TOGGLE = 0
can be used to define that the programmed values should be evaluated.
A value of 0, i.e., AMIRROR X0, deactivates the mirroring of the axis, and values not equal to
0 cause the axis to be mirrored if it is not already mirrored.
It is possible to read or write mirrors component by component independent of machine data
MD10612 $MN_MIRROR_TOGGLE.
Axis Types, Coordinate Systems, Frames (K2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
; $P_NCBFRAME[0] : $P_NCBFRAME[7]
; $P_CHBFRAME[0] : $P_CHBFRAME[4]
Detailed Description
2.4 Frames
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