Desktop Lighting Control - Leviton CN100 Installation Manual

SYSTEM & COMPONENT OVERVIEW • DESKTOP LIGHTING CONTROL

DESKTOP LIGHTING CONTROL

With Centura, you have the option to control lighting right from the desktop by linking the Leviton lighting
control network (LCnet) and a building's Intranet. There are two levels of control: user and administrator.
The average user can utilize the Leviton Personal Dimmer, a new software program installed on their
computer, while building managers and facilities personnel can control lights and settings across the
entire network using the Leviton Personal Dimmer Administrator. In addition to these Personal Dimmers,
you must also install Leviton HTTP Server software and the NE100 SmartJack. Note: Since the software
is likely to be installed after the initial installation of other components is completed, this manual covers
installation of only the SmartJack in detail and not the software. Software installation is covered in more
detail in the User Guide.
Specifically, desktop control is enabled by installing server software, connecting a SmartJack to the
server host, and installing client software on as many IBM-compatible desktop computers as you like.
Using the existing Intranet infrastructure eliminates the need for additional hardwiring. The system allows
you not only to dim and brighten lights and turn them on and off, but also to adjust the settings that
direct automatic functions such as daylight harvesting. On one hand, numerous workstations can be
set to control lighting attached to a single Power Pack. On the other hand, a single workstation can be
configured to access multiple Power Packs and, therefore, multiple lighting subsystems.
Here's how it works: A 2-way connection is formed between each computer and the lighting
controls in an office through the building's existing network infrastructure. The SmartJack
translates messages between the low voltage lighting system and software on the
designated Centura Dimming System server (called Leviton HTTP Server) through a
serial port. Leviton HTTP Server transfers information between the SmartJack and the
building Intranet (using HTTP).
For example, suppose you want to brighten the lights in your office from your computer. If you keep
the Leviton Personal Dimmer open, on your desktop, the fastest way is to move the Quick Slider to a
new position. The client software now sends an HTTP message to the server software over the building
Intranet, which is routed just like any other HTTP message from a networked computer. The server
software receives the message, converts it, and sends a message on its serial port to the SmartJack.
The SmartJack translates the message from the serial protocol to the LCnet protocol and sends it to
the Power Pack. The Power Pack adjusts the lights based on the message content. Figure 1-11
illustrates this process.
5
Dimming Power Pack
receives message
and changes light level
Dimming
Power Pack
User adjusts
1 2
light level
from onsite PC OR
or offsite laptop
10
6
Power Pack sends
message with new
level, and the process
is reversed
Leviton Control Network (LCnet)
HTTP
Computer running
Leviton Personal
Dimmer sends HTTP
message to server
Fire Wall/VPN
Dial-up
Figure 1-11: LCnet Communication Flow
Fixture
LCnet
HTTP
Building
Ethernet
3
Server running Leviton
HTTP Server translates HTTP messages
and sends serial message to SmartJack
SmartJack
4
translates
message
serial
SmartJack