Siemens SINUMERIK 840DE Programming Manual page 485

I/O module
I/O modules represent the link between the CPU and the process. I/O modules are:
• ->Digital input/output modules
• ->Analog input/output modules
• ->Simulator modules
Inch system
Dimension 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
Traversed distance information via the number of increments. The number of increments can
be stored as -> setting data or selected using keys labeled with 10, 100, 1000, 10,000.
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.
Initialization block
Initialization blocks are special -> program blocks. They contain value assignments that are
performed before program execution. The primary purpose of initialization blocks is to
initialize predefined data or global user data.
Initialization files
It is possible to create an initialization file for each -> workpiece. Various variable
assignments, which are intended to apply specifically to one workpiece can be stored in this
file.
Interconnecting cables
Connecting cables are pre-assembled or user-assembled 2-wire cables with a connector at
each end. These interconnecting cables connect the -> CPU via the -> multipoint interface
(MPI) with a -> programming device or other CPUs.
Intermediate blocks
Traversing movements with tool offset selected (G41/G42) can be interrupted by a limited
number of intermediate blocks (block without axis movements in the compensation plane)
whereby the tool offset can still be correctly calculated. The permissible number of
intermediate blocks, which the control reads ahead can be set in system parameters.
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Glossary
Glossary-9