BACnet Gateway: Directions & Applications
page 7
Douglas Network Groups Status and Control
The WNG-2133 BACnet Gateway is a BACnet device that is used to simplify and streamline the inclusion of a Douglas
Lighting Controls network into a larger BACnet network. The WNG-2133 is designed to work with the main Douglas network
configurations, LonWorks and MC-6000. The WNG-2133 BACnet Gateway will simplify several of the otherwise awkward,
although standard, data representations on a Lonworks system.
It will also isolate the Lighting subnet, effectively relieving the burden of lighting configuration from the integrator, allowing the
'user friendly' Douglas configuration tools to setup and bind the lighting portion of the network.
Group Status and Control
The WNG-2133 employs a FTT-10 and a RS-485 communication chip programmed to pass data to a Field Server Protocessor
BACnet IP interface. Each processor has its own independent transceiver port for network communications to either the
W-2000 system or the MC-6000 system. The BACnet IP interface will connect to the integrator toolset, while side B will
connect to and monitor the lighting subnet using standard self-configuring routines.
Relay status will be made available for WNX-2624, WSP-2718, or MC-6210 devices. This “smart” status will consist of an
ANALOG value per relay represented.
0=Not Connected, 1=On, 2=Off, 3=Error
. Relay status will be updated to the
integrator whenever the gateway detects a change of relay state for a given device.
Relay activation is via a simple ANALOG value per relay represented.
0=Off, 1=On
.
Group Status will be made available for the system as a whole. This is via a simple BINARY POINT value per group represented.
0=Off, 1=On
.
Group Control is via a “smart” ANALOG value per group represented. When used with a MC-6000 System,
3=Off, 4=On
.
With the W-2000 it has the full functionality of the LonWorks
SNVT_Scene
. The values entered into the value will operate the
following functions:
Name
Description
SC_GROUP_OFF
Network group OFF.
3
SC_GROUP_ON
Network group ON.
4
SC_FLICK
Relays are flicked as soon as this command is sent to warn occupant of an impending
OFF sweep. After the flick warn is issued the tenant has 5 minutes to turn the relay OFF
and back ON to exclude their light from the OFF sweep.
9
SC_TIMEOUT
The relays are set to Timeout mode. When the timeout period expires (default 2 Hours)
the relays will go OFF without any warning.
Relays will stay in Timeout mode until an SC_ENABLE_GROUP is issued.
10
SC_TIMEOUT_FLICK
Same as SC_TIMEOUT except relays are flicked 5 minutes before impending OFF
sweep to warn the occupant. After the flick warn is issued the tenant has 5 minutes
to turn the relay OFF and back ON to exclude their light from the OFF sweep.
Relays will stay in Timeout mode until an SC_ENABLE_GROUP is issued.
11
12
SC_DELAYOFF
Relays are OFF after a timed period (Default delay time = 15 minutes).
13
SC_DELAYOFF_FLICK
Relays are OFF after a timed period (Default delay time = 15 minutes) with Flick Warn.
14
SC_DELAYON
Relays are ON after a timed period (Default delay time = 15 minutes).
15
SC_ENABLE_GROUP
Enable the group for network commands. This is also used to stop relays from Timeout mode.
16
SC_DISABLE_GROUP
Disable the group for network commands. Relays will be masked from all Network commands.
Relays will stay in Disable mode until an SC_ENABLE_GROUP is issued.
SC_CLEANON
Cleaning mode, where relays turn ON then return to original state when manual OFF signal
received, is activated.
Cleaning mode is disabled.
SC_CLEANOFF
17
18
19
SC_WINK
All group relays turn ON, then back to OFF after a delay period called 'wink'.
