Echelon Lumewave CRD 3000 Street Light Bridge - Manual (Page 36)

26 Setting Up the Segment Controller
4. If a network message fails, a data point and its device are marked offline.
You can select the Use Minimal Offline Time checkbox so that all the
data points on the offline device with pending network messages
(read/write requests, polls, or heartbeats) are marked offline and network
messages are not sent to them. Thus, network performance is not
impacted by an offline device.
You can also set the minimum period of time (in seconds) that the
Segment Controller waits before transmitting network messages to
offline data points. During this period, an offline device transmits an
OFFLINE status in response to data point requests. After the Minimal
Offline Time elapses, the Segment Controller sends a read/write request
to one offline data point. If the read/write request succeeds, the data
point and its device are marked online, and all cached read/write requests
for the offline data points on the device are executed. If you do not
configure this property on a power line repeating channel, it is set to 60
seconds.
5. Optionally, you can set the Use Offline Delay property to specify the
period of time (in seconds) that the Segment Controller waits before
marking a data point and its parent device offline (red) in the Segment
Controller tree after the LON driver detects that the data point is offline.
For example, if you poll a data point every 5 minutes and you set Use
Offline Delay to 1 hour, it takes 12 polls for the data point and its
parent device to be marked offline—even though the LON driver detected
that it could not communicate with the data point after the first poll.
6. Optionally, you can click Advanced to set the retry timer and retry
counts that determine the frequency in which network messages are re-
sent to a device after no confirmation of delivery is received. Although
you can change these properties, it is recommended that you use the
default transmit timer (512 ms) and the default retry count (3).
7. Click Submit.
Copying Resource Files
The Segment Controller needs a copy of the resource files for each device type
(luminaire and CRD 3000 Street Light Bridge module) in the street lighting
network. You can obtain the resource files for the CRD 3000 Street Light Bridge
module from www.echelon.com/slb . You can obtain the appropriate resource files
for each luminaire type from the manufacturer.
To copy these files to the Segment Controller:
1. Open an FTP connection to the Segment Controller. See the i.LON
SmartServer User’s Guide for more information about using FTP with the
Segment Controller.
2. For the Street Light Bridge files, unzip the downloaded file to the
Segment Controller’s root folder. The files should unzip to the correct
subfolders.
3. For luminaire files, copy the files from the downloaded (or otherwise
provided) resource files to the folder defined by the manufacturer,