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DNC and Bluetooth
Ahmad Bashar Ataji
What is DNC ?
 DNC = Direct numerical control.
 Prospering with the success of CAD/CAM
with 3D contours.
Why DNC ?
 Huge file sizes.
 So limited memories for CNCs.
 Without DNC, files are spoon-fed.
DNC Overview :
 DNC PC
 CNC Machine
 Connection
DNC Overview (cont):
 CAD/CAM workstation
DCN (Direct CNC Networking) :
DNC
 Two different networks
DCN
 One network
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
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).
SS-FH Technology :
 SS-FH = Spread Spectrum Frequency
Hopping.
 A device randomly uses one of 97
frequency band.
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).
Building Bluetooth network
(piconet) :
 It uses master/slave.
 Building piconet is divided into steps:
Inquiry.
Page.
Connecting.
Talking.
Inquiry :
 Each unit has an
address.
 Each master has a
range of addresses.
 Master asks for
response from units in
range.
Page :
 Master and each
slave agree on the
connection properties.
Connection and Taking :
What Bluetooth has to do with DNC
 Replacing the serial
connection by using a
Bluetooth adapter.
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
Bluetooth Networks :

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Dnc and bluetooth

  • 1. DNC and Bluetooth Ahmad Bashar Ataji
  • 2. What is DNC ?  DNC = Direct numerical control.  Prospering with the success of CAD/CAM with 3D contours.
  • 3. Why DNC ?  Huge file sizes.  So limited memories for CNCs.  Without DNC, files are spoon-fed.
  • 4. DNC Overview :  DNC PC  CNC Machine  Connection
  • 5. DNC Overview (cont):  CAD/CAM workstation
  • 6.
  • 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