Issue 4.5 August 2005 Nodes 5-47
햻
Ringnet communications Nodes should be wired in a ring configuration as illustrated in the following
diagram. The maximum permissible distance between nodes is 1Km (using Belden 9829). The interface uses RS485 in a
ring topology. The main controller therefore has two RS485 ports and completes the ring connection – as illustrated in
the following connection diagram and type table.
Note See the branch node diagram in the following section: “8 Input/1 Output (I/O) Node” on page 5-13.
cable type
maximum distance
between nodes
Belden 9502 (screened) 500m
UTP Category: 5 (solid core) 1000m
Belden 9829 1000m
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