Ring Communications DNB100 - Manual (Page 10)

September 2004 DIGITAL NETWORK BRIDGE DNB100
F10 RING COMMUNICATIONS INC.
Figure F3 - Front panel indicators
FRONT PANEL SWITCHES AND INDICATORS - Figure F3
SWITCHES
SW1 - Reset. Creates a local reset for this node only.
SW2 - Node & Network Address
SW3 - RS232 Baud Rate, Device selection
L.E.D.'s (left side, network)
RUN - Indicates the local processor in the DNB100 is running. Will illuminate after power up
or reset.
MASTER - Will light steady if this node is the master on the network. There can only be one master
on each network. On power up, each device waits for a response from a master. If no
response is received, then this device will take over as a master. Therefore, the first
device powered up will be the master.
TX - Transmit data to the Network. Will flash when the DNB100 sends data out on the
Network. If the Master LED is on, the TX LED will flash constantly. When the Master
LED is off, TX will only flash when transmitting to other devices.
RX - Receive data from the Network. Will flash when data is transmitted from another device
to the network. If the Master LED is on, the RX LED will flash when other devices
respond to scanning from the Master. When the Master LED is off, the RX LED will
flash constantly.
L.E.D.'s (right side, RS232)
RTS - Request to send. Output, indicates the DNB100 wants to send data to the RS232
device.
CTS - Clear to send. Input, (selectable for internal or external input) illuminated when the
RS232 device is ready to receive data from the DNB100.
TX - Transmit data. Output to RS232 device. Should flash every second when the time is
updated or data is transmitted to the RS232 device.
RX - Receive data. Input from RS232 device. Will flash when keys are pressed on the
terminal device or data is sent to the DNB100.