User's Manual

56 Managing a Street Lighting Network
To view the repeating chain of a specific device, click one of the 20 blue-
highlighted devices in the tree to clear the pre-selected devices and then
click the device to be viewed. To view the repeating chains for a set of
specific devices, click one of the 20 blue-highlighted devices in the tree to
clear the pre-selected devices, click a device in the tree, and then either
hold down CTRL and click all other devices to be viewed, or hold down
SHIFT and select another device to view the entire range of devices.
3. You can identify proxies (repeating devices that can relay messages to
devices located further down the channel) and target devices (the
destination device in a repeating chain) by observing whether there is a
device listed in the column to the right. If there is no device listed in the
column to the right, that device is a target device.
The simple power line repeating network shown in the figure above
corresponds to the following physical configuration:
PL-20 Channel
Repeating Chain
RF Hop RF Hop
Lamp 1 Lamp 2
SLB 1 SLB 2
PLC PLC Hop
The direct communication devices (proxies that can directly receive
messages from the SmartServer without any repeating) are listed in the
Direct Communication column (in the example above, the SmartServer
can reach both Lamp 1 and SLB 1 directly). The direct communication
devices can relay messages to proxies and target devices further down the
power line (in the example above, SLB 2 and Lamp 2).
The proxies and target devices are listed under the Proxy Zone columns
(in the example above, SLB 2 is Proxy Zone 1, and Lamp 2 is in Proxy
Zone 2). The last repeating device in the chain before the target device is
referred to as the “proxy agent”.
For example, if a target device uses four hops to receive a message, you
would observe: