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Installation notes
Electrical installation
Manual – MOVI‑C
®
CONTROLLER standard UHX25A
25
The integrated Ethernet switch
The device is equipped with an integrated 2 port Ethernet switch for connecting the
fieldbus technology. The following network topologies are supported:
•
Tree topology
•
Star topology
•
Line topology
•
Ring topology
INFORMATION
The number of industrial Ethernet switches connected in line impacts the telegram
runtime. If a telegram passes through the devices, the telegram runtime is delayed by
the "store-and-forward" function of the Ethernet switch:
•
For a telegram length of 64 bytes by approximately 10 µs (at 100 MBit/s)
•
For a telegram length of 1500 bytes by approximately 130 µs (at 100 MBit/s)
→
This means the more devices a telegram has to pass through, the higher the tele-
gram runtime is.
Auto-crossing
The two ports leading out of the Ethernet switch have auto-crossing functionality. You
can use both patch and crossover cables to connect to the next Ethernet node.
Auto-negotiation
The baud rate and duplex mode are negotiated by both Ethernet nodes when estab-
lishing the connection. For this purpose, both Ethernet ports of the Ethernet connec-
tion support an auto-negotiation functionality and work with a baud rate of either
100 Mbit or 10 Mbit in full duplex or half duplex mode.
25800736/EN – 08/2018
Содержание MOVI-C UHX25A Series
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