www.rovingnetworks.com

2

RN -WIFLY-SR L-UM- 1.0

OVERVIEW

The Roving Networks Wi-Fi serial adapters supply a serial-to-Wi-Fi bridge, providing wireless connectivity to any legacy

system that supports serial communication. Connected to a remote host, the adapters transfer data read or written to the

serial interface to a remote application such as an iPhone app, data logger, or PC control console. The adapters support

Wi-Fi infrastructures or ad hoc networking, which allows you to use existing, low-cost wireless connectivity while remotely

connecting to any WiFly serial adapter in the world.

Because Apple iOS devices require an additional Bluetooth authorization co-processor for any and all devices connecting

to the iPhone, using the Wi-Fi serial adapter in ad hoc mode is a simple, cost-effective way to connect to iPhone apps. The

WiFly serial adapters are more than a cable replacement solution: by allowing TCP/IP sockets, applications can control and

monitor hundreds of Wi-Fi serial adapters remotely distributed across a building LAN or campus WAN.

The adapters also support other usage modes. For example, when configured in auto-connect mode, the WiFly serial

adapter connects to a pre-stored IP address whenever data is written to the serial port. The adapter can also be

programmed to sleep automatically when idle and wake up based on a time delay, UART RX data, or CTS signal state

change.

POWERING THE WIFLY SERIAL ADAPTER

The RN-340 and RN-370 serial adapters have different powering capabilities: the RN-340 uses a DC power source, while

the RN-370 uses either batteries or a DC power source.

Powering the RN-340 Adapter

The RN-340 adapter has a built-in voltage regulator and can be powered from a 4 to 12 V DC power source. You can also

power the RN-340 adapter using pin 9 of a DB9 connector.

Powering the RN-370 Adapter

You can power the RN-370 adapter using rechargeable batteries or the external power connector. The adapter has a red

button on it’s top, which is a soft on/off switch.

WARNING: Do NOT use alkaline batteries when connecting the external power connector to the adapter; otherwise, the

alkaline batteries will leak and damage the serial adapter.

Turning the Adapter On & Off

To turn the adapter on, press the red button for 1 second and then release it. The green, yellow, red, and blue LEDs flash

in succession. After a moment, the blue and yellow LEDs go off and the red and green LEDs remain flashing.

To turn the adapter off, press the red button for 1 second and then release it. The green, yellow, red, and blue LEDs flash

in succession several times. Then all LEDs turn off and the device is in sleep mode.

By default, the adapter automatically shuts off if it is not connected for more than 3 minutes (i.e., 180 seconds). You can

control the sleep timer duration using the set system sleep <seconds> command. Use the get sys command to display the

sleep timer’s current settings.