Siemens PROFINET CP 343-1 Manual page 43

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:
● In STEP 7 special diagnostics under the diagnostics object "Industrial Ethernet" in the
● in STEP 7 with the menu command "PLC > Module Information"
● In Web diagnostics
Further notes:
● Autocrossover
● 10/100 Mbps network components without "autonegotiation"
● Forcing a specific network setting instead of "Autonegotiation"
● No reaction to Autonegotiation query with manual configuration
CP 343-1
Manual, 10/2012, C79000−G8976−C201-07
"Network Connection" group box
If you disable the "Automatic setting" option, autocrossing is disabled; which cable you
then use depends on the integration of the CP (network component or end device).
If you use 10/100 Mbps network components that do not support "Autonegotiation", it is
possible that you will have to set the mode manually in the CP configuration in STEP 7.
As default, the CP is configured for automatic detection.
If your application requires a fixed network setting instead of "Autonegotiation", both
partner devices must have the same setting.
Remember that if you configure the CP manually, it will not react to an autonegotiation
query! As a result, a connected partner will not be able to make the required network
setting and communication will not be established.
Example:
If the CP is set to "100 Mbps full duplex", a CP connected as partner will set itself to "100
Mbps half duplex". Reason: Due to the fixed setting, no autonegotiation response is
possible; the connected partner recognizes the 100 Mbps with autosensing but
nevertheless remains in half duplex.
Notes on configuration and operation
6.3 Network settings
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