Siemens NCM S7 Manual De Usuario
Communication via Ethernet CPs in S7 Stations
16
SIMATIC NET NCM S7 for Industrial Ethernet
Release 6/2003
C79000–G8976–C129–07
1.1
Industrial Ethernet
Definition
Within the open, heterogeneous SIMATIC NET communication system, Industrial
Ethernet is the network for the management and cell level. Physically, Industrial
Ethernet is an electrical network that uses a shielded coaxial cable or twisted pair,
or an optical network with fiber-optic cables.
Ethernet is the network for the management and cell level. Physically, Industrial
Ethernet is an electrical network that uses a shielded coaxial cable or twisted pair,
or an optical network with fiber-optic cables.
Industrial Ethernet is defined by the international standard IEEE 802.3 (see /11/).
All-Round Communication in the Industrial Sector
Industrial Ethernet is integrated in the SIMATIC NET concept that allows
comprehensive networking of the management, cell and field levels in conjunction
with PROFIBUS and the AS-interface (AS-i).
comprehensive networking of the management, cell and field levels in conjunction
with PROFIBUS and the AS-interface (AS-i).
PROFIBUS
(EN 50170 Vol. 2 PROFIBUS)
(EN 50170 Vol. 2 PROFIBUS)
AS-Interface
(AS-i, Actuator-Sensor Interface)
(AS-i, Actuator-Sensor Interface)
Industrial
Ethernet
(IEEE 802.3)
Figure 1-1
Industrial Ethernet in the SIMATIC NET Concept
Network Access
Industrial Ethernet is accessed using the CSMA/CD (Carrier Sense Multiple
Access with Collision Detection) network access technique specified in
IEEE 802.3.
Access with Collision Detection) network access technique specified in
IEEE 802.3.