King Fahd University of Petroleum and Minerals

1

• King Fahd University of Petroleum and Minerals
• EE- 400
• Communication Networks
• Wireless Industrial Networks
• (Wireless HART)
• Prepared For
• Dr. Samir Ghadhban
• Done By
• Khalil Al-Saedi ID 233263
• Ali Al-Ojaimi ID 233535

2
OUTLINES

• INTRODUCTION
• NETWORK ARCHITICTURE
• LAYERS SPECIFICATIONS
• Physical Layer
• Data-Link Layer
• Network Layer
• Transport Layer
• Application Layer
• CONCLUSION

3
INTRODUCTION

• Wireless HART is a Wireless Mesh Network
  Communications Protocol.
• designed to meet the needs for process automation
  applications.

4
INTRODUCTION

• Wireless HART is a key part of the HART Field
  Communications Protocol Revision 7
• Existing HART applications (e.g., control
  systems, PLC's, maintenance tools, and asset
  management applications)

5
NETWORK ARCHITICTURE

• Wireless HART Field Devices (WFD)
• connected to the process or to plant equipment

6
NETWORK ARCHITICTURE

• Wireless HART Gateways
• enable communication between Host Applications
  and WFD
• support one or more Access Points
• A Gateway and its Access Points must included in
  every Wireless HART network

7
NETWORK ARCHITICTURE

• A Wireless HART Network Manager
• responsible for configuration of the network
• scheduling communication between Wireless HART
  devices (e.g., configuring super frames)
• management of the routing tables
• monitoring and reporting the health of the
  Wireless HART Network

8
NETWORK ARCHITICTURE
9
LAYERS SPECIFICATIONS

• Physical Layer
• Maximum data rate (250 kbps).
• Operating Frequency (2.4 - 2.48 GHz).
• O-QPSK modulation and Direct Sequence Spread
  Spectrum (DSSS).
• transmit Power is 10dBm.

10
LAYERS SPECIFICATIONS

• Data-Link Layer
• Wireless HART DLPDU (Data Link Protocol Data
  Unit) specifies a byte which identifies Wireless
  HART packet types.
• TDMA using timeslots organized into super frames
  as 100 timeslots per second depending on the
  bandwidth.
• Link between devices specified by super frames,
  timeslots and channel offset.

11
LAYERS SPECIFICATIONS

• Network Layer
• Devices support routing and broudcast.
• Request bandwidth.
• Configure the shared slots and blocking
  transmission.

12
LAYERS SPECIFICATIONS

• Transport Layer
• provides end-end acknowledgement of
  communications.
• Acknowledged transmissions include automatic
  retransmission to confirm successful data
  transfer.
• Supports TCP-like reliable blocking for
  transmission of large data sets.

13
LAYERS SPECIFICATIONS

• Application Layer
• Device status for quality process.
• Commands aggregation for multiple command.

14
CONCLUSION

• Wireless HART provides new capabilities and more
  secure process.
• The HART technology becomes the leader of the
  wireless industrial networks.

15
REFERENCES

• 1)
• http//www.pepperl-fuchs.com/selector/navi/product
  Info/doct/tdoct1535__eng.pdfjsessionidC3FB6B5B6D
  CA2903B8DAB2FA5610A903
• 2)
• http//wireless.industrial-networking.com/article
  s/articledisplay.asp?id14
• 3) http//www.globalspec.com/FeaturedProducts/Deta
  il/Wireless_HART_Gateway/33442/0
• 4)
• http//www.cds.caltech.edu/shiling/wirelesshart_
  datasheet.pdf
• 5)
• http//portal.etsi.org/Docbox/Workshop/2008/200812
  _WIRELESSFACTORY/HARTFOUNDATION_Griessmann.pdf