Siemens Sinumerik 802D sl Programming Manual page 176

Terms
Increment
Increment
Initialization block
Initialization file
Intermediate blocks
Interpolation cycle
Interpolative
compensation
Interpolator
B-176
A destination for axis traversal is defined by a distance to be
covered and a direction referenced to a point already reached. See
also --> absolute dimension.
Travel path length specification based on number of increments.
The number of increments can be stored as a --> setting data or
selected with keys labeled with 10, 100, 1000, 10 000.
Initialization blocks are special --> program blocks. They contain
values which must be assigned before the program is executed.
Initialization blocks are used primarily for initializing predefined data
or global user data.
An initialization file can be created for each --> workpiece. In it, the
various variable value instructions which apply exclusively to one
workpiece can be stored.
Movements with selected tool offset (G41/G42) can be interrupted
by a limited number of intermediate blocks (blocks without axis
motions in the offset plane). When such blocks are used, the tool
offset can still be calculated correctly. The permissible number of
intermediate blocks read in advance by the control can be set via
system parameters.
The interpolation cycle is a multiple of the basic system cycle. It
specifies the cycle time for updating the setpoint interface to the
position controllers. The interpolation cycle determines the
resolution of the velocity profiles.
Interpolative compensation provides a means of compensating for
leadscrew errors (LEC) and measuring--system errors (MSEC)
resulting from the production process.
Logical unit of the --> NCK which determines intermediate values for
the movements to be traversed on the individual axes on the basis
of destination positions specified in the part program.
SINUMERIK 802D sl/840D sl840D/840Di sl/840Di/810D ISO Turning - - 04.07 Edition
© SIEMENS AG 2007 All rights reserved
04.07