Ring Communications DNB100 - Manual (Page 5)

September 2004 DIGITAL NETWORK BRIDGE DNB100
F5 RING COMMUNICATIONS INC.
DNB100 DIGITAL NETWORK BRIDGE
INTRODUCTION
The Digital Network Bridge (DNB100) interfaces two Ring-Master Crisis Alert Networks to each
other. One DNB100 is required in each network.
OPERATIONAL DESCRIPTION
The DNB100 is installed on a network using a RJ45, eight conductor, modular connector to connect
to the RS485 data pair and the +24 Volt DC power. The two DNB100's are "bridged" using a RS232
or RS422 connection between them.
Maximum distance with RS232 is 15 M (50 feet)
Maximum distance with RS422 is 3 KM (10,000feet).
The address of the DNB100 is set on DIP Switch SW2. The network address is the same as the
network it is attached to, and the node number must always be zero.
The DNB100 can be reset by pressing SW1.
The DNB100 has eight LED's for indication of operation and trouble shooting. See Figure F3 and
description on page F10.
When a data packet on a network contains a destination address not on this network the DNB100
takes the data packet and transfers it through an RS232RS422 port to the DNB100 on the other
network. The DNB100 on the second network re-transmits the data on its RS485 network.
Use BF640A cord to connect the DNB100 to the RJ45 network jack, KB171.
Use BF961 cord to connect the DNB100 to the RS422 jack,KB161.
Cords and jacks must be ordered separately.
Bridge mode:
The DNB100 may connect two networks with different network number.
This will increase the total number of nodes from 8 to 16.
Bridges may be interconnected using copper, fiber optic cable drivers, radio or data multiplexers.
Only one Bridge(DXB901 or DNB100) may be in bridge mode on a network.
The DNB100 does not use a node position.
Extender mode:
The DNB100 may connect two networks with the same network number.
Bridges may be interconnected using copper, fiber optic cable drivers, radio or data multiplexers.
Multiple DNB100 can be connected in extender mode to a network.
The DNB100 does not use a node position.