Terms
04.07
B-184
© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
B
B spline The programmed positions for the B spline are not interpolation
points, but merely ”check points”. The curve generated does not
pass directly through these check points, but only in their vicinity
(1st, 2nd or 3rd degree polynomial).
Back up A copy of the memory contents (hard disk) stored on an external
device for data backup and/or archiving.
Backlash
compensation
Compensation of a mechanical machine backlash, e.g. backlash
due to reversal of leadscrews. The backlash compensation can be
entered separately for each axis.
Backup battery The backup battery provides non--volatile storage for the --> user
program in the --> CPU and ensures that defined data areas and
flags, timers and counters are retentive.
Base axis Axis whose setpoint or actual value is employed in calculating a
compensatory value.
Basic coordinate
system
Cartesian coordinate system, is mapped onto machine coordinate
system by means of transformation.
In the --> part program, the programmer uses the axis names of the
basic coordinate system. The basic coordinate system exists in
parallel to the --> machine coordinate syst em when no -->
transformation is active. The difference between the systems relates
only to the axis identifiers.
Baud rate Rate at which data transmission takes place (bit/s).
Blank The unmachined workpiece.
Block A section of a --> part program terminated with a line feed. A
distinction is made between --> main blocks and --> subblocks.
Block All files required for programming and program execution are known
as blocks.
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