Omron and Bluetooth

T EC H N OT ES
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Q u i c k Sta r t
N ote
February 2008
Omron and Bluetooth
Bluetooth wireless technology is a short-range communications system intended to replace the cables connecting
portable and/or fixed electronic devices. The key features of
Bluetooth wireless technology are robustness, low power,
and low cost. Many features of the core specification are
optional, allowing product differentiation.
Omron delivers Bluetooth products for wireless programming
of the PLC. The Promi SD205-OA is wireless serial adapter
line based on Bluetooth technology. Promi-SD205-OA enables RS232-based serial devices to communicate wirelessly
throughout the range of 100m ~ 1000m. The Promi-SD205-OA
is configured by using easy-to-use Windows-based utility
software, by using standard AT command set or using the
Promi-SD205’s DIP-switch. The user can simply configure
Baud Rate and Hardware Flow Control settings of the PromiSD205. The pairingbutton enables 2 Promi-SD205-OA’s to
connect automatically.
The Bluetooth RF (physical layer) operates in the unlicensed
ISM band at 2.4GHz (the same range of frequencies used by
microwaves and Wi-Fi). The system employs a frequency hop
transceiver to combat interference and fading
The operating range depends on the device class:
Class 3 radios – have a range of up to 1 meter
Class 2 radios – most commonly found in mobile devices – have a range of 10 meters
Class 1 radios – used primarily in industrial use cases
– have a range of 100 meters
Bluetooth technology is an ad hoc technology that requires
no fixed infrastructure and is simple to install and set up.
You don’t need wires to get connected. The process for a new
user is easy – you get a Bluetooth branded product, check the
profiles available and connect it to another Bluetooth device
with the same profiles. The subsequent PIN code process is
as easy as when you identify yourself at the ATM machine.
When out-and-about, you carry your personal area network
(PAN) with you and can even connect to others.
From the start, Bluetooth technology was designed with security needs in mind. Since it is globally available in the open
2.4 GHz ISM band, robustness was built in from the beginning.
With adaptive frequency hopping (AFH), the signal “hops” and
thus limits interference from other signals. Further, Bluetooth
technology has built-in security such as 128bit encryption and
PIN code authentication. When Bluetooth products identify
themselves, they use the PIN code the first time they connect.
Once connected, always securely connected.
OMRON Bluetooth products
Omron delivers the Promi-SD205-OA and various antennas that extend wireless communication range and an USB
Bluetooth antenna to provide the PC with Bluetooth
Promi-SD205-OA
Stub Antenna
Dipole Antenna
Patch Antenna
Source for WLAN information http://www.bluetooth.com/bluetooth
For more information about the Promi SD205-OA please contact the Omron representative.
USB Bluetooth adapter
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