EA Technology UltraTEV Monitor, Руководство по эксплуатации

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EA Technology UltraTEV Monitor
TM
Operating Manual 2178L014
35
7.3 Connecting the Nodes
The UltraBus communication cables to the Nodes are wired in a daisy chain manner, i.e. each Node
has two connections, one for connection to the previous Node or Hub Unit (Server) and one for
connection to the next Node (see Figure 23). The connections are made using CAT 7 Screened
Twisted Pair (STP) Ethernet cable. The cables supplied with the Monitor are colour coded to the
colour blocks on the Node label to simplify connection.
If additional cables are required, they are available from EA Technology.
Figure 22: Details of Node Ethernet cable colour coding
No specific Node connection order is required although a linear flow along the switchgear will make
the system easier to set up. Each standard Hub Unit can support up to 48 Nodes. The connection
method depends on how many nodes are used. Each string can support 15 nodes in an open-ended
configuration, and 30 nodes in a loopback configuration:
Please contact EA Technology if you require a larger system.
Figure 23 and Figure 24 show how the open-ended and loopback strings are connected:
Figure 23: Example open-ended set up of two strings on UltraBUS channels 1 and 2 (maximum 15 Nodes per string)