1. © 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

2. © 2008 Swagelok Company. Swagelok NeSSI Gen II Bus Architecture V T P A NeSSI Device Sample System Flow Sensors Sensor Analyzer Manager SAM IS NeSSI Bus Remote Operator Station & Plant Control System Ethernet Analyzer Hazardous Area Class 1 Div 1 (Zone 1)

3. © 2008 Swagelok Company. Swagelok ISO OSI Communications Model Virtual Message Path Actual Message Path

4. © 2008 Swagelok Company. Swagelok CANopen Communications Model DS301 Application Layer Communications Framework Profile DS401 Generic IO Modules Profile DS404 Measuring Devices Profile DS405 Programmable Devices Profile DS425 Medical Devices  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 Software IC Chip Drivers CAN: Controller Area Network protocol developed Robert Bosch for automotive applications. Hardware

5. © 2008 Swagelok Company. Swagelok IS and the Ignition Curve Voltage = Distance Frequency

6. © 2008 Swagelok Company. Swagelok IS Capable CANopen Architecture +Vdc Grnd CAN-HI CAN-LO Circuit Segment Cable Length Circuit Voltage ≤ 9.5 Vdc Segment Driver = 3.3 Vdc Cable Length ≤ 10 m

7. © 2008 Swagelok Company. Swagelok Gen II NeSSI Bus Open Standard www.can-cia.org CiA 103 DSP V1.0 April 2007

8. © 2008 Swagelok Company. Swagelok IS CANopen Highlights The CAN physical layerISO11898-1,2 & CiA DSP103 Area ClassificationClass 1 Div 1 (Zone 1) Power bus specification P+F RSD2-PSD-EX4.43 Co-cabled 10m max2 Power and 2 CAN wires M12 or M8 ConnectorsSingle power source per device 3.3V BiCMOS Driver1/3 the Power of 5V Driver Entity Parameters V OC (V)I SC (A)GroupsC O (uF)L O (uH) A, B (IIC) (Acetylene & Hydrogen) 0.810 9.5Vdc1.0 A C (IIB) (ethylene) 2.440 D (IIA) (propane) 6.480

9. © 2008 Swagelok Company. Swagelok What’s Next? DS301 Application Layer Communications Framework Profile DS401 Generic IO Modules Profile DS404 Measuring Devices Profile DS405 Programmable Devices Profile DS426 Analytical 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

10. © 2008 Swagelok Company. Swagelok Discussion?