Siemens SINUMERIK 840D sl Programming Manual page 663

Job planning

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Table of Contents

Rotary axes rotate a workpiece or tool to a defined angular position.

Component of a → frame that defines a rotation of the coordinate system around a particular

Rounding axis

Rounding axes rotate a workpiece or tool to an angular position corresponding to an

indexing grid. When a grid index is reached, the rounding axis is "in position".

Safety functions

The control is equipped with permanently active montoring functions that detect faults in the

→ CNC, the → PLC, and the machine in a timely manner so that damage to the workpiece,

tool, or machine is largely prevented. In the event of a malfunction, the machining sequence

is interrupted and the drives are stopped and the cause of the malfunction is saved and

displayed as an alarm. At the same time, the PLC is informed that a CNC alarm is pending.

Component of a → frame that implements axis-specific scale modifications.

Serial V.24 interface

For data input/output, the PCU 20 has one serial V.24 interface (RS232) while the

PCU 50/70 has two V.24 interfaces. Machining programs and manufacturer and user data

can be loaded and saved via these interfaces.

Control operating area

Setting data

Data that communicate properties of the machine tool to the NC control in a manner defined

by the system software.

A key whose name appears on an area of the screen. The selection of keys displayed is

adapted dynamically to the operating situation. The freely assignable function keys

(softkeys) are assigned defined functions in the software.

Job planning

Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0