applications
DNG485 Instruction Manual Rev F.doc
4
The DNG485 can be used for several different applications, some of which are described below:
Implementing Trunk/Spur Topology
This style of topology is used in large installations, where there is one or more data trunk cables
that may interconnect DNG485s located at different floors or distribution boards. The other port on
the DNG485 is then connected to a spur that feeds the dimmers and control panels in that locale.
The recommended method of connection is to connect the Spur to the Port 1, and the trunk to the
Port 2. Some reasons for implementing Trunk/Spur topology include:
OPTICAL ISOLATION
– A fault on a Spur will be localised to that Spur only, the rest of the system
will be unaffected.
QUANTITY OF NETWORK DEVICES
– A finite number of devices can be connected to a single
RS485 data cable. The recommended maximum number of devices i
s 128. The use of DNG485‟s
gives a maximum of 128 devices per spur, with 128 spurs per trunk, a total of 16384 devices per
trunk. There can be as many trunks as required.
DUS703C
Universal Sensor
D
y
N
e
t
T
ru
n
k
DyNet Spur
DUS703C
Universal Sensor
To up to 123 more devices
DUS703C
DDNG485
Network Gateway
Universal Sensor
D
y
N
e
t
T
ru
n
k
DyNet Spur
DUS703C
Universal Sensor
To up to 123 more devices
To other
floors
To other
floors
DBC410
CH4
CH3
CH2
CH1
CH1
CH2
CH3
CH4
EL1
DBC410
CH4
CH3
CH2
CH1
CH1
CH2
CH3
CH4
EL1
DBC410
CH4
CH3
CH2
CH1
CH1
CH2
CH3
CH4
EL1
DBC410
CH4
CH3
CH2
CH1
CH1
CH2
CH3
CH4
EL1
DDNG485
Network Gateway
DDNG485
DDNG485
DDNG485
1
2
1
2
Interfacing To Other Systems
The DNG485 can be used to connect other manufacturers equipment to the Dynalite network. A
common example of this is converting DMX512 into DyNet. When setting up the DMX512 network
ensure that it is connected to Port 2 of the DNG485 and that both ends of the DMX cable are
terminated with 120
Ω resistors.
DyNet DC Power Supply
The DNG485 has a 450mA power supply on Port 1 which will supplement the DyNet power supply
available for use by other peripherals.
DyNet Network
DNG485
DMX512 Network
