Siemens SINUMERIK 840D Operator's Manual page 478

A
Appendix
B Terms
Compensation table
Compensation value
Connecting cables
Continuous-path mode
Contour
Contour monitoring
Coordinate system
CPU
Cycle
Cycles support
D
Data block
Data transfer program
PCIN
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Table of interpolation points. It supplies the compensation values of
the compensation axis for selected positions of the base axis.
Difference between the axis position measured by the position sensor
and the desired, programmed axis position.
Connecting cables are pre-assembled or user-assembled 2-wire
cables with a connector at each end. They are used to connect the ->
CPU via the -> multipoint interface (MPI) to a -> programming device
or to other CPUs.
The purpose of continuous-path mode is to avoid rapid deceleration
-> of the path axes at parts program block boundaries and to make
the transition to the next block at as constant a velocity as possible.
Outline of a -> workpiece.
The following error is monitored within a definable tolerance band as a
measure of contour accuracy. Overloading of the drive, for example,
may result in an unacceptably large following error. In such cases, an
alarm is output and the axes stopped.
See -> machine coordinate system, -> workpiece coordinate system
Central Processor Unit -> programmable controller
Protected subroutine for executing a recurring machining operation on
the -> workpiece.
The available cycles are listed in menu "Cycle support" in the
"Program" operating area. Once the desired machining cycle has
been selected, the parameters required for assigning values are
displayed in plaintext.
1. Data unit of the -> PLC which can be accessed by -> HIGHSTEP
programs.
2. Data unit of the -> NC: Data blocks contain data definitions for
global user data. These data can be initialized directly when they
are defined.
PCIN is a routine for transmitting and receiving CNC user data, e.g.
parts programs, tool offsets, etc. via the serial interface. The PCIN
program can run under MS-DOS on standard industrial PCs.
SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition
A
03.04
Ó Siemens AG, 2004. All rights reserved