7. DCN (Direct CNC Networking) :
DNC
Two different networks
DCN
One network
8. Bluetooth Fundamentals :
Harald bluetooth king of Denmark in the
late 900s
Bluetooth 1.0 has 1Mbps maximum
Bluetooth 2.0 has 3Mbps maximum
It is a radio-frequency standard
9. Bluetooth Technology :
It uses low power waves about 1 milliwatt.
Its range is 10m.
It can connect 8 devices simultaneously.
It uses SS-FH technology.
It uses ISM frequency band (between
2.402GHz and 2.48GHz).
10. SS-FH Technology :
SS-FH = Spread Spectrum Frequency
Hopping.
A device randomly uses one of 97
frequency band.
11. SS-FH Technology (cont):
The transmitting device changes
frequency 1600 times every second.
Interference will be small and over short
period of time.
The random change in frequency is done
in regular way (using generative codes).
12. Building Bluetooth network
(piconet) :
It uses master/slave.
Building piconet is divided into steps:
Inquiry.
Page.
Connecting.
Talking.
13. Inquiry :
Each unit has an
address.
Each master has a
range of addresses.
Master asks for
response from units in
range.
14. Page :
Master and each
slave agree on the
connection properties.
16. What Bluetooth has to do with DNC
Replacing the serial
connection by using a
Bluetooth adapter.
17. Industrial Bluetooth network :
This networks are build over two levels
Piconets
Industrial nets
Piconets are build by replacing the master
with an access point. This access point is
the gateway between the Ethernet and the
piconet