Typical Bus Configuration - Leuze electronic DDLS 200 Technical Description

10.6.1 Typical bus configuration

Switch
TN
TN
Figure 10.10:Typical Ethernet bus configuration
The optical data path has a maximum data rate of 2Mbit/s in each direction of data transmission. In
the network, it must be ensured that the average data rate in each direction of transmission is less
than or equal to 2Mbit/s. This is, amongst others, achieved by the following measures.
• Address filtering by upstream switch:
The upstream switch ensures that only messages for nodes located downstream of the optical
data transmission path are transmitted. This leads to a significant reduction in data
• Receiver buffer:
Via the 16kByte receiver buffer, brief peak loads can be managed without data loss. If the receiver
buffer overflows, the subsequent messages are rejected (dropped).
• Primary transmission protocol:
The primary protocol (e.g., TCP/IP) ensures that messages are re-sent if they are lost or have
remained unacknowledged. In addition, protocols such as TCP/IP automatically adapt to the avail-
able bandwidth of the transmission medium.
Leuze electronic
10/100Mbit/s
Switch
TN
TN
DT
2Mbit/s
DT
2Mbit/s
DDLS 200
PLC
10/100Mbit/s
DT
Moving cell 1
PLC
10/100Mbit/s
DT
Moving cell 2
Ethernet
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