IS CAN Bus – CiA DSP 103 V 1.0

© 2008 Swagelok Company.

IS CAN Bus – CiA DSP 103 V 1.0

Low Cost, Intrinsically Safe Transducer Bus Enabling NeSSI Gen II

Rick Ales Swagelok Company

IFPAC 2008

Baltimore, MD

© 2008 Swagelok Company. Swagelok

NeSSI Gen II Bus Architecture

V TPA

NeSSI Device Sample System

FlowSensors

Sensor Analyzer Manager SAM

IS NeSSI Bus

Remote Operator Station

& Plant Control System

Ethernet

Analyzer

Hazardous Area Class 1 Div 1 (Zone 1)


ISO OSI Communications Model

Virtual Message Path

Actual M

essage P

ath

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CANopen Communications Model

DS301 Application Layer Communications Framework

Profile DS401 Generic IOModules

Profile DS404 Measuring

Devices

Profile DS405Programmable

Devices

Profile DS425MedicalDevices

Data Link Layer CAN 2.0* ISO 11898-2

Physical Layer ISO 11898-2 CiA DS 102

Physical Layer CiA DSP 103

NEW

Application Layer CENELEC EN 50325-4

Softw

are

IC

Chip

Driver

s

•CAN: Controller Area Network protocol developedRobert Bosch for automotive applications.

Hardw

are


IS and the Ignition Curve

Voltage =DistanceFrequency


IS Capable CANopen Architecture

+VdcGrndCAN-HICAN-LO

Circuit

Segment

Cable Length

Circuit Voltage ≤ 9.5 Vdc

Segment Driver = 3.3 Vdc

Cable Length ≤ 10 m


Gen II NeSSI Bus Open Standard

www.can-cia.org

CiA 103 DSP V1.0

April 2007


IS CANopen Highlights

• The CAN physical layer ISO11898-1,2 & CiA DSP103• Area Classification Class 1 Div 1 (Zone 1)• Power bus specification P+F RSD2-PSD-EX4.43• Co-cabled 10m max 2 Power and 2 CAN wires• M12 or M8 Connectors Single power source per device• 3.3V BiCMOS Driver 1/3 the Power of 5V Driver

Entity Parameters

VOC (V) ISC (A) Groups CO (uF) LO (uH)

A, B (IIC) (Acetylene & Hydrogen) 0.8 10

9.5Vdc 1.0 A C (IIB) (ethylene) 2.4 40

D (IIA) (propane) 6.4 80


What’s Next?

DS301 Application Layer Communications Framework

Profile DS401 Generic IOModules

Profile DS404 Measuring

Devices

Profile DS405Programmable

Devices

Profile DS426Analytical

Devices

Data Link Layer CAN 2.0 ISO 11898-2

Physical Layer ISO 11898-2 CiA DS 102

Physical Layer CiA DSP 103

Application Layer CENELEC EN 50325-4

NEXT


Discussion?

Documents

IS CAN Bus – CiA DSP 103 V 1.0