Siemens SIMATIC NET CP 343-1 Manuel d'utilisateur télécharger pdf (Page 61)

9 Further Notes on Operation

B−61

CP 343-1 Advancedfor Industrial Ethernet / Manual Part B

Release 06/2008

C79000-G8976-C202-04

9.2 Network settings with Fast Ethernet / gigabit Ethernet

9.2.1 Fast Ethernet with the PROFINET and gigabit interface

The common transmission characteristics of the two interfaces are described

below. For information on the transmission speed 1 Gbps of the gigabit interface,

see Section 9.2.2.

The configuration of the network settings “Transmission medium / duplex” is made

for both interfaces in the properties dialog of the port of the relevant interface in the

“Options” tab.

Row “X1P1”: Port properties of the gigabit interface

Row “X2P1”: Properties of port 1 of the PROFINET interface

Row “X2P2”: Properties of port 2 of the PROFINET interface

Automatic setting or individual network settings

As default, the CP is configured for automatic detection

(Autosensing/Autonegotiation/Autocrossing).

Notice

In normal situations, the basic setting ensures trouble-free communication. You

should only change these in exceptional situations.

If you create a manual configuration for the CP, the automatic negotiation of the

network settings (autonegotiation) is no longer effective. If, on the other hand, the

communication partner works with autonegotiation, no communication will be

established.

Only use manual configuration when the communication partner works with the

same manually set configuration.

Autocrossing mechanism

The automatic setting also includes an “autocrossing” mechanism. With

autocrossing, you can connect network components and end devices using either

crossover or straight-through cables.

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Siemens SIMATIC NET CP 343-1 Manuel d'utilisateur Page 61