Course ProjectCourse Project

Wireless HART Wireless HART

ForFor

Dr. Samir GhadhbanDr. Samir Ghadhban

PREPARED BYPREPARED BY

AL-SHAHRANI, ABDUL-AZIZ AL-SHAHRANI, ABDUL-AZIZ (237391)(237391)

AL-MUTAIRY, WALEED AL-MUTAIRY, WALEED (236365)(236365)

OUTLINESOUTLINES

INTRODUCTIONINTRODUCTION NETWORK ARCHITICTURENETWORK ARCHITICTURE LAYERS SPECIFICATIONSLAYERS SPECIFICATIONS

Physical LayerPhysical Layer Data-Link LayerData-Link Layer Network LayerNetwork Layer Transport LayerTransport Layer

CONCLUSIONCONCLUSION

WirelessWireless HART is a Wireless Mesh HART is a Wireless Mesh Network Communications Protocol. Network Communications Protocol.

designed to meet the needs for designed to meet the needs for process automation applications.process automation applications.

INTRODUCTIONINTRODUCTION

INTRODUCTIONINTRODUCTION

WirelessWireless HART is a key part of the HART is a key part of the HART Field Communications Protocol HART Field Communications Protocol Revision 7Revision 7

Existing HART applications (e.g., control Existing HART applications (e.g., control systems, PLC's, maintenance tools, and systems, PLC's, maintenance tools, and asset management applications) asset management applications)

NETWORK ARCHITICTURENETWORK ARCHITICTURE

Wireless HARTWireless HART Field Devices (WFD): Field Devices (WFD):

connected to the process or to plant connected to the process or to plant equipment equipment

NETWORK ARCHITICTURENETWORK ARCHITICTURE

Wireless HARTWireless HART Gateways: Gateways:

enable communication between Host enable communication between Host Applications and WFD Applications and WFD

support one or more Access Points support one or more Access Points A Gateway and its Access Points must A Gateway and its Access Points must

included in every included in every Wireless HARTWireless HART network network

NETWORK ARCHITICTURENETWORK ARCHITICTURE

A A Wireless HARTWireless HART Network Manager: Network Manager:

responsible for configuration of the responsible for configuration of the network network

scheduling communication between scheduling communication between Wireless HARTWireless HART devices (e.g., configuring devices (e.g., configuring super frames) super frames)

management of the routing tables management of the routing tables monitoring and reporting the health of the monitoring and reporting the health of the

Wireless HARTWireless HART Network Network

NETWORK ARCHITICTURENETWORK ARCHITICTURE

LAYERS LAYERS SPECIFICATIONSSPECIFICATIONS

Physical Layer:Physical Layer:

Maximum data rate (250 kbps)Maximum data rate (250 kbps) Operating Frequency (2.4 - 2.48 GHz)Operating Frequency (2.4 - 2.48 GHz) transmit Power is 10dBm (Nominal) transmit Power is 10dBm (Nominal)

adjustable in discrete steps (e.g., 0dBM adjustable in discrete steps (e.g., 0dBM and others)and others)

LAYERS LAYERS SPECIFICATIONSSPECIFICATIONS

Data-Link Layer:Data-Link Layer: has long and short addresseshas long and short addresses

Additional Additional Wireless HARTWireless HART DLPDU DLPDU specifies a byte which identifies specifies a byte which identifies Wireless Wireless HARTHART packet types packet types

Bus Arbitration with TDMA using Bus Arbitration with TDMA using timeslots organized into super frames as timeslots organized into super frames as 100 timeslots per second 100 timeslots per second

LAYERS LAYERS SPECIFICATIONSSPECIFICATIONS

Data-Link Layer:Data-Link Layer:

Acknowledgement packets include Acknowledgement packets include timing information to continuously timing information to continuously synchronize TDMA operation across synchronize TDMA operation across entire network entire network

LAYERS LAYERS SPECIFICATIONSSPECIFICATIONS

Network Layer:Network Layer:

Upstream and downstream graph routing Upstream and downstream graph routing

Provides redundant path routing for Provides redundant path routing for maximum reliability and managed latency maximum reliability and managed latency

Supports Broadcast, multi-cast and uni-Supports Broadcast, multi-cast and uni-cast transmissions. cast transmissions.

LAYERS LAYERS SPECIFICATIONSSPECIFICATIONS

Transport Layer:Transport Layer:

provides un-acknowledged and end-end provides un-acknowledged and end-end acknowledgement of communications acknowledgement of communications

Acknowledged transmissions include Acknowledged transmissions include automatic retries to confirm successful automatic retries to confirm successful data transferdata transfer

also supports TCP-like reliable block also supports TCP-like reliable block transfers of large data sets transfers of large data sets

CONCLUSIONCONCLUSION

Wireless HART provides new Wireless HART provides new capabilities for users to get capabilities for users to get information on process parametersinformation on process parameters

The HART Communication The HART Communication Foundation provides worldwide Foundation provides worldwide support for application of HART support for application of HART technologytechnology