Ethernet
Leuze electronic DDLS 200 53
TNT 35/7-24V
10.3 Device configuration Ethernet
10.3.1 Autonegotiation (Nway)
If the switch S2.1 of the DDLS 200 is set to ON (default), the device is in autonegotiation mode. This
means that the DDLS 200 detects the transmission characteristics of the connected partner unit auto-
matically (10MBit or 100MBit, full or half duplex) and adjusts itself accordingly.
If both devices are in autonegotiation mode, they adjust to the highest common denominator.
If a certain transmission type is to be required, the autonegotiation function must be deactivated (S2.1
= OFF). The transmission characteristics can then be set using the switches S2.2 and S2.3.
10.3.2 Transmission rate conversion
Through the use of an optical data transmission system, the Ethernet is divided into two segments.
Different transmission rates can be used in the physically separated segments. The DDLS 200then
functions as transmission rate converter. During transmission rate conversion, it must be ensured that
the bandwidth of the segment with the lower transmission rate is adequate for processing the incoming
data.
10.3.3 Network expansion
Figure 10.4: Network expansion
NOTE
The network expansion of the bus system can be increased through the use of the DDLS
200.
Switch / hub Optical data transmission End device / PLC
1 : 1 cable
Max. 100m
Crossover cable
Max. 100m
Up to 300m
DDLS200_E.book Seite 53 Mittwoch, 19. Februar 2020 12:22 12
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