Notes on configuration and operation
6.3 Network settings
CP 343-1 Lean
38 Manual, 10/2012, C79000−G8976−C198−07
Module access protection
The configurable module access protection has the following effects on the functions
described here:
● Module access protection: Not locked
The functions cannot be executed.
● Module access protection: Status-dependent
With this setting, it is only possible to access the CP when the CPU is in STOP mode.
6.3 Network settings
The configuration of the network settings "Transmission medium / Duplex" is made in the
properties dialog of the port of the interface in the "Options" tab.
Row "X1P1": Properties of port 1 of the PROFINET interface
Row "X1P2": 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).
Note
In normal situations, the basic setting ensures troublefree communication. You should only
change this 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.
STEP 7 special diagnostics and Web diagnostics display the network setting
Diagnostics of the port settings for the CP described here is possible using the entries in the
diagnostics buffer using Web diagnostics, SNMP, STEP 7 diagnostics, and the LED
displays.
You will find information on the currently used network settings in STEP 7 as follows:
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