B502
B502 Page 6 840D/828D SINUMERIK Operate
Notes
Section 4
Points and distances within the work space
XMR =
YMR =
ZMR =
Distances from the reference point to the machine
zero point. These are set by the machine manufac-
turer during commissioning and are transferred to
the control unit when the reference point is reached.
XMW =
YMW =
ZMW =
These represent distances from the machine zero
point to the work piece zero point. The work piece
zero point must be determined by the operator by
scratching or probing and entered into the tool cor-
rection memory.
XPF =
ZPF =
Distances from the tool carrier reference point to the
tool point on the cutting edge or the front face of the
milling cutter.
XMF =
ZMF =
Distances from the machine zero point to the tool
carrier reference point. The distance is determined
by the machine manufacturer and entered into the
control unit.
XMW
ZMW
YMR
ZPF
ZMR
YMW
XMR
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