Siemens SIMATIC NET CP 443-1 Advanced Manual page 70

Configuration and operation
6.5 Interface configuration
Automatic setting or individual network settings
As default, the CP is configured for automatic detection (autosensing).
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 and disable the autonegotiation option, the
automatic negotiation of the network settings (autonegotiation) is no longer effective.
If, on the other hand, the communications partner works with autonegotiation, it is not certain
that communication will be established.
Autocrossing mechanism
With the autocrossing mechanism integrated in the switch, it is possible to use a standard
cable to connect the PC/PG. A crossover cable is not necessary.
Note
Manual configuration
If you have set a port to manual configuration and select the "Disable autonegotiation"
option, the autocrossing mechanism is also disabled for this port. The port then behaves like
the interface of a switch. In this case, the following applies:
• Connecting an end device
To connect an end device that does not have the autocrossing mechanism (for example
CP 4431 with article number 6GK7 443-1EX11-0XE0), do not use a crossover cable.
• Connecting a switch
To connect a switch, that does not support the autocrossing mechanism, use a crossover
cable.
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 SNMP, special diagnostics, and the LED displays.
You will find information on the currently used network settings in STEP 7 as follows:
● In special diagnostics under the diagnostics object "Industrial Ethernet" in the "Network
Connection" group box
● in STEP 7 with the menu command "PLC > Module Information"
● In Web diagnostics
70
CP 443-1 Advanced (GX30)
Manual, 03/2019, C79000-G8976-C256-05