Data Structure Of The Nc Control - Siemens SINUMERIK 840D Operator's Manual

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Data structure of the NC control

SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition

4.1 Data structure of the NC control

The following components exist:

· NC with part program memory

· HMI with hard disk

Use the softkeys "Load" - "Unload" to transfer the data to the NC or

from the NC to the hard disk.

Tool offset TOA

Zero offset ZOA

R parameters

Data in the NC memory are retained when the control power supply is

switched off. Only one copy exists of programs that are loaded from

the hard disk to the NC memory. The program memory in the NC is

limited (see memory display).

Machine Operating Area

Program memory

Parts programs

Sub routines

Display data

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