CPC Router and Repeater, Инструкция по установке и эксплуатации

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Points to Consider Networking Using Routers and Repeaters
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Constructing an Echelon network using routers and
repeaters is very different than constructing a simple net-
work of less than 64 nodes. Networking with routers and
repeaters requires some planning in order to determine:
• How many routers and repeaters are necessary, and
• Where routers and repeaters should be placed.
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Network layout will be different depending on whether
or not you are using four-channel repeaters. Therefore, it is
a good idea to decide beforehand if they will be used.
If your network contains a large number of nodes and/
or it is spread out over a large amount of distance, you will
likely make your network setup easier and cheaper if you
use four-channel repeaters in each Einstein. The ability to
extend more than one daisy chain from each Einstein gives
more freedom to run Echelon cable where it is most con-
venient, and it eliminates the need to run wire back from
the field to the Einsteins.
If your network contains only 2-3 Einsteins and
between 64-128 nodes, and the nodes are concentrated in a
relatively small area, you may be able to easily construct
your network without four-channel repeaters.
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Any daisy-chain segment that ends at a device
mounted in the field will need to be terminated. If this
device is a TD3 or ESR8, there is no on-board means of
terminating the device, and if it is a CC-100/CS-100, the
enclosure will have to be opened to set the termination
jumpers. If you have any of these devices in your installa-
tion, you should obtain one or more Daisy Chain Termina-
tion Blocks (P/N 535-2715) to terminate daisy chains in
the field.
CPC specifies only one type of cable for use with Ein-
stein Echelon networks: Level 4 twisted pair, stranded,
shielded 22AWG cable. Contact your CPC salesman for
information on how to purchase this cable.
Further technical specifications for this cable type are
given in Table 3-1 and Table 3-2.
Cable Type Level 4, twisted pair, stranded, shielded
Wire Diam./AWG 0.65mm/22AWG
Loop Resistance 106(ohms/km)
Capacitance 49(nF/km)
Maximum Cable Length 4592 ft. (1400 m)
Table 3-1
- Echelon Network Cable Specifications
Cable Type CPC Part Number
1 pair, non-plenum 135-2300
1 pair, plenum 135-2301
Table 3-2
- Recommended Wiring