Siemens SIMATIC NET S7-300 Manual page 50

2 Characteristics of the Ethernet CPs
S CP with integrated switch - twisted-pair attachment to RJ-45 female
connector
To set up small local area networks or to connect several Ethernet devices a
4-port switch was integrated in the CP 443-1 Advanced and a 2-port switch in
the CP 343-1 and CP 343-1 Lean.
With the autocrossing mechanism integrated in the switch, it is possible to
establish the connection from a laptop or PG directly using standard cables. A
crossover cable is not necessary.
Example of cabling:
S7-300 CP
PC/PG with Ethernet
CP
HMI station with
Ethernet CP
Figure 2-5
A -50
Operator Inter-
face functions
S7-CPs for Industrial Ethernet Configuring and Commissioning
CP 443-1 advanced
For example:
Optical Switch
Module (OSM)
Release 01/2007
C79000-G8976-C182-07