Siemens Sinumerik 840D sl Programming Manual page 197

Inclined axis
Fixed angular interpolation with allowance for an inclined infeed axis or grinding wheel by
specifying the angle. The inclined axes are programmed and displayed in the Cartesian
coordinate system.
Inclined surface machining
The "Inclined surface machining" function supports drilling and milling operations on
workpiece surfaces that are inclined with reference to the coordinate planes of the machine.
The position of the inclined surface can be defined via the oblique position of the coordinate
system (refer to FRAME programming).
Increment
The end point for the traversing of axes is defined by the distance to be covered and a
direction that refers to a point already reached. See also -> Absolute dimension.
Specification of the length of the travel path in increments. The number of increments can
be stored either in the -> setting data or it can be selected with the keys 10, 100, 1000 and
10 000.
Initialization block
Initialization blocks are special -> program blocks. These contain values that
must be assigned before executing the program.
Initialization blocks are the preferred choice for initializing previously defined data or global
user data.
Initialization files
An initialization file can be created for each -> workpiece. Different instructions for variable
values that are valid exclusively for a workpiece, can be stored in the initialization file.
Intermediate blocks
Movements with a selected tool offset (G41/G42) can be interrupted by a limited number of
intermediate blocks (blocks without traversing movements at the compensation plane). The
tool offset can be calculated correctly while using intermediate blocks. The number of
intermediate blocks that can be read in advance by the control system can be set in the
system parameters.
Interpolation cycle
The interpolation cycle is a multiple of the basic system cycle. The interpolation cycle is used
to specify the cycle time that is required to update the setpoint interface with the position
controls. The resolution of the velocity profiles is determined with the interpolation cycle.
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
Glossary
197