Siemens SINUMERIK 828D Function Manual page 1760

Glossary
High-speed digital inputs/outputs
The digital inputs can be used for example to start fast CNC program routines (interrupt routines). The digital
CNC outputs can be used to trigger fast, program-controlled switching functions (SINUMERIK 840D).
HIGHSTEP
Summary of programming options for → PLCs of the AS300/AS400 system.
Identifier
In accordance with DIN 66025, words are supplemented using identifiers (names) for variables (arithmetic
variables, system variables, user variables), subroutines, key words, and words with multiple address letters.
These supplements have the same meaning as the words with respect to block format. Identifiers must be
unique. It is not permissible to use the same identifier for different objects.
Inch measuring system
Measuring system, which defines distances in inches and fractions of inches.
Inclined surface machining
Drilling and milling operations on workpiece surfaces that do not lie in the coordinate planes of the machine can
be performed easily using the function "inclined-surface machining".
Increment
Travel path length specification based on number of increments. The number of increments can be stored as →
setting data or be selected by means of a suitably labeled key (i.e. 10, 100, 1000, 10000).
Incremental dimension
Also incremental dimension: A destination for axis traversal is defined by a distance to be covered and a direction
referenced to a point already reached. See → Absolute dimension.
Intermediate blocks
Motions with selected → tool offset (G41/G42) may be interrupted by a limited number of intermediate blocks
(blocks without axis motions in the offset plane), whereby the tool offset can still be correctly compensated for.
The permissible number of intermediate blocks which the control reads ahead can be set in system parameters.
Interpolator
Logic unit of the → NCK that defines intermediate values for the motions to be carried out in individual axes
based on information on the end positions specified in the part program.
Basic Functions
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0