Automatic identification of the transmission rate and operating mode
Make sure there are no inconsistencies in Ethernet CPs, switches and network adapters in
terms of their settings/properties for data transmission rate and bus access procedure.
We recommend using the default Autonegotiation setting (procedure for the automatic
negotiation of the best transmission mode between two network interfaces which are directly
connected to one another).
The term autonegotiation denotes the automatic identification and negotiation of transmission
rate and operating mode (full duplex/half duplex).
● Full duplex is an operating mode with bidirectional data communication, where the
communication partners can send data on the transmission link independently of one
another.
● Half duplex is an operating mode with bidirectional data exchange, in which only one
communication partner at a time can send data on the transmission link.
Requirement
The "Autonegotiation" setting needs to be changed if nodes which do not have access to this
setting must be communicated with in the network.
Configuring network nodes
Location
of use
Network node Opening the configuration dialog
window
Parameter setting
PC Communication mod‐
ule
e.g. CP 16xx
For automatic negotiation of the
configured network parameters
(autonegotiation).
Activate option buttons for du‐
plex mode and transmission
rate.
PC Set INTEL network
adapter (or similar
standard network
adapter)
1. Use the search box in the start
menu to open the "Device
Manager".
2. Select network adapter.
3. File > Properties
4. "Advanced" tab
Set values for the property.
Typical name for the property
(depends on the network
adapter used):
● Speed and duplex mode
● Link speed & duplex
Switches SCALANCE X ...
e.g.:
SCALANCE X-400
● Configuration via Telnet or
Web Based Management
(WBM)
● Open the configuration dialog
box for the switch via Internet
Explorer:
http: \\<TCP-IP address>
Port configuration
Installing PC stations
5.7 Preparing PC stations
PCS 7 - PC Configuration (V8.2)
Installation Manual, 03/2016, A5E36200050-AB 121
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