Configuring the real-time clock, Setting the segment controller time, Adding an sntp time server – Echelon Lumewave CRD 3000 Street Light Bridge User Manual

Page 89

Street Light Bridge Integrator’s Guide

4. Select the data points to be updated by the Event Scheduler. See

5. Create the daily schedules: set the days for which the daily schedules are

used and creating events. See Creating Scheduled Events on page 91.

6. Create the exception schedules: set the range of dates and recursions for

which the exception schedules are used and creating events. See

Configuring the Real-Time Clock

The real-time clock on the Segment Controller provides the Event Scheduler with

calculated sunrise and sundown times. To configure the real-time clock, you

specify an existing SNTP time server to add to the LAN on which the Segment

Controller resides or you manually specify the time. After you store the time of

day on the Segment Controller, you enter the geographic coordinates of the

Segment Controller.
Based on this information, the astronomical position sensor application on the

Segment Controller calculates the position of the sun relative to the Segment

Controller and stores this information in nvoElevation_005 and

nvoAzimuth_005 SNVT_angle_deg data points. The Segment Controller then

uses the data points to calculate the sunrise and sundown times and stores the

results in nvoSunrise and nvoSunset SNVT_time_stamp data points. The

information in these data points is then passed to the Event Scheduler so that

you can create events based on the calculated sunrise and sundown times.

Setting the Segment Controller Time

For the Segment Controller to calculate the position of the sun, you need to store

the time of day on it. You can add an SNTP time server to the LAN on which the

Segment Controller resides, or you can manually configure the time.

Adding an SNTP Time Server

To specify an SNTP server to add to the LAN, perform the following steps:

1. Right-click the LAN icon or a dial-out connection icon, select Add Host,

and select Server (LNS, Email, Time, IP 852, WebTarget) from the

shortcut menu, or if are you adding the time service to an existing server

on the LAN, skip to step 4.

2. The Setup Host Web page opens, and a server icon is added one level

below the LAN icon at the bottom of the navigation pane or one level

below the dial-out connection icon.