1. NeSSI-bus History, Evolution and Selection for Process Analytical CPAC, Seattle, WA, USA November 10, 2005 “the best way to predict the future is to create it”

2. 2 V P A F Sensor/Actuator Manager (SAM) NeSSI™-bus dcs Fluid Handling System ANLAN - Ethernet/OPC USB equivalent…..?

3. 3 End User Objective 1: More diagnostics and control through use of sensors/actuators A system may require as many as 20 I/O –P, T, F sampling system –valves & pumps –utility monitoring –heating/cooling –in addition to analytical Currently we have no good way of handling these devices V P A F Fluid Handling System

4. 4 End User Objective 2: Rated IS for hazardous areas* Europe, USA, Canada, Japan and the Russian Federation use different Hazardous Area approval bodies The use of a universally acceptable hazardous protection method allows entry into any geography without conditions or exceptions The NeSSI-bus requires Intrinsic Safety (IS)* [Ex ia/b] meets the requirements of ALL jurisdictions approval bodies [e.g. FM, CSA, ATEX, GOST] The NeSSI-bus shall also be available (without a barrier) for use in general purpose non-IS applications (N-IS)

5. 5 End User Objective 3: Screw on connections and simple wiring* Probably the compelling reason for an IS bus is the ability to operate miniature devices in a hazardous environment using screw on connections and “normal” wiring. The M8 cable size is ideal for flexibility and small components POCA = Proof of Concept Apparatus

6. 6 End User Objective 4: PC-like* host for the NeSSI-bus Today we use a hodge- podge of analyzer I/O, PLC’s, DCS’s, data bases, proprietary systems to handle sensors and actuators needed for diagnostics and control Enables a simple graphical user interface Enables use of 3 rd party software Sensor/Actuator Manager (SAM) Industrial, miniature PC * Transmitter sized

7. 7 End User Objective 5: Make our systems more reliable. Reduce the use of unintelligent devices! Discrete devices (switches) do not meet industries needs. The NeSSI-bus transmits both analogue and discrete sensor data as well as allowing data read/write to each device along with status checks

8. 8 End User Objective 6: Open, non proprietary, rugged bus A CLEAR DESIGN TARGET FOR COMPONENT MANUFACTURERS * WE NEED TO REDUCE DESIGN RISK*

9. 9 End User Objective 7: Formation of a NeSSI-Bus Users Group (N-bug) Deal with issues unique to the PA industry Reduce risk to manufacturers Similar to CanOpen Vehicle User Group CPAC may be an opportune forum

10. 10 History & Evolution of the NeSSI-bus 2000 - NeSSI launched – mechanical fluid components initially 2001 –7 elements of Generation II proposed 2001 – X-team advocates Div/Zone 1 approval for NeSSI 2002 – NeSSI Gen II spec draft released 2003 – ODVA/Rockwell Meeting (DeviceNet) 2003 – NIST Meeting (CiA/IEEE-1451.6 initiative launched) 2003 - Swagelok demos first CAN valve actuation system 2003 – POCA Sample System using CAN proof of concept (Dow, EMCC, Honeywell) 2003 – Intertec releases first “smart” heater 2004 – “This Dog Don’t Hunt” 4-20 mA eliminated as a viable sol’n 2004 - Honeywell selects ProfiBus for DOE prototype 2005 - Honeywell selects FF for DOE project with Softing 2005 – (Nov Workshop) Alternative buses proposed at CPAC

11. 11 Foundation Fieldbus Status Work miniaturizing FF for NeSSI is languishing –Honeywell’s funding by the US Department of Energy (DOE) has been cut back and they are not driving this development nor providing prototypes –concern expressed about cost of FF nodes A champion needed to push FF miniaturization for NeSSI

12. 12 Fork in the Road Foundation Fieldbus - powerful - control on the wire - more expensive - out of box intrinsic safety CAN based/alternatives - cheap - simple, robust - small - IS certification needed