Siemens SINUMERIK 840Di Function Manual page 2027

Basic axis
Axis whose setpoint or actual value is used to calculate a compensation value.
Basic coordinate system
Cartesian coordinate system that is mapped to the machine coordinate system through a
transformation.
The programmer uses axis names of the basic coordinate system in the → part program. The
basic coordinate system exists in parallel to the → machine coordinate system if no
→ transformation is active. The difference between the two coordinate systems lies in the
→ axis identifiers.
Baud rate
Rate of data transmission (bits/s).
Block
All files that are required for program creation and execution are designated as blocks.
Block search
For debugging purposes or following a program abort, the "Block search" function can be
used to select any location in the part program at which the program is to be started or
resumed.
Booting
Loading of system program after a Power On.
C-axis
Axis around which a controlled rotary motion and positioning occurs with the workpiece
spindle.
Channel
A channel is characterized by the fact that it can process a → part program independently of
other channels. A channel has exclusive control over the axes and spindles assigned to it.
Part program runs of different channels can be coordinated through → synchronization.
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Glossary
Glossary-3