Several Operator Panels And Ncus With Control Unit Management (Option); General Information - Siemens SINUMERIK 840D sl Function Manual

Several Operator Panels on Several NCUs, Distributed Systems (B3)
2.1 Brief Description
7-layer model structure
Communication takes place on the following protocol layers:
Figure 2-3
The NCU link and DP can operate faster because they are assigned directly to layer 2.
2.1.2

Several operator panels and NCUs with control unit management (option)

2.1.2.1

General information

Introduction
The system configuration must be highly flexible so as to meet the requirements of complex
machines, such as rotary indexing machines, multi-spindle machines and complex NC
production centers.
They frequently require:
● Several control units (M) due to large machine dimensions and physical separation of
● Several NCUs (N) due to large numbers of axes and channels
Restriction
The standard functionality applies to all SW versions without the option. However different
performance grades depending on SW version must also be taken into account (see
"Supplementary conditions").
While the standard functionality supports only certain restricted M:N combinations, the
"control unit management" option provides a flexible, universal solution for satisfying the
requirements above.
78
Protocol levels of 7-layer model
operator stations
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
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