Siemens SINUMERIK 840 Planning Guide

11.92 2 Description of Functions
2.1 General
2 Description of Functions
2.1 General
2.1.1 Overview
Hardware structure/data structure
The data relating to tool management are divided up as follows in the SINUMERIK 840/880
system:
Fig. 2.1 Distribution of the data required for tool management
Current
magazine
assign-
ment
Display program
Tool offset
PLCNC
COM
UMS
TO DBs
SINUMERIK 880,
SINUMERIK 840 or
SINUMERIK 840C
operator panel
The TO memory is assigned to the NC area; it is physically located in the link RAM. The tool
offsets for the individual cutting edges are stored in the TO memory. The current assignment
of the tool-holding magazine is kept in data blocks in the PLC area. The COM area contains,
amongst other things, the UMS (user memory submodule) where the display descriptions (link
© Siemens AG 1991 All Rights Reserved 6FC5 197-0AA40-1BP1 2–1
SINUMERIK 840/880 (PJ)

Siemens SINUMERIK 840 Specifications

General

Control Type	CNC
Axes	Up to 31
Display	TFT color display
PLC	Integrated
HMI	SINUMERIK Operate
Communication Interfaces	Ethernet, PROFIBUS, PROFINET
Type	CNC system
Programming Languages	G-code
Max Number of Channels	10
Operating Temperature	0 to 45 °C
Relative Humidity	Up to 95% (non-condensing)
Protection Class	IP54 (front panel)