1. CPAC Communications Session PITTCON 2001, March 5 - 8, 2001 Rick Ales Swagelok Solon, Ohio

2. Sensors & Actuators CPAC NeSSI Example 1

3. Information & Control Signals Analyzer Analog 4-20ma Pressure Flow Temperature Analog 4-20ma Pressure Flow Temperature Discrete 0-24Vdc Valve Drive Heater Power Alarms Discrete 0-24Vdc Valve Drive Heater Power Alarms

4. On-Line I/O Based Architecture Hazardous Area - Intrinsically Safe Discrete I/O Bit Bus Analog I/O DCS Network Safe Area Discrete 0-24Vdc Alarms Solenoid valve Analog 4-20ma Pressure Flow Temperature Communication Hazardous Area Explosion Proof Data Logger Discrete 0-24Vdc Electric Valve Electric Heater Discrete Hi Power Analyzer EEx d or EEx p

5. Sensor / Actuator Bus Architecture EEx ia IIC Hazardous Area DCS Network Safe Area Discrete Alarms Solenoid valve Analog Pressure Flow Temperature Analyzer EEx d or EEx p OPC Server Data Log Soft PLC S/A Bus Hazardous Area Explosion Proof Discrete 0-24Vdc Electric Valve Electric Heater Discrete Hi Power

6. Sensor Actuator Requirements Simple Multi Drop Master / Slave Architecture 10 Meters or Less @ 100K bps or Less Choice of IS or Powered Physical Layer Single Chip MAC Layer / CPU Encapsulated Application Layer