FieldLink Process Networking Introduction
Conventional vs Communication Communication Network
Reduced Wiring Infrastructure Conventional I/O Communication Networks 15
Conventional Networked Reduced I/O Footprint Conventional Networked Cabinet savings!! 256 I/O 256 I/O
Savings up to 60% over conventional Realize additional savings due to instrument diagnostics and increased functionality!
The Technology Adoption Life Cycle Volume Point to Point Wiring Bus Networking Wireless This curve represents where different technologies are on the life cycle. Point to Point (conventional wiring) still has the highest volume level, but these are laggards when it comes to newer technologies. Bus Networking is leaving the early adopter stage and moving into early majority. Wireless has the lowest volume levels and are utilized by those who fall into the innovators arena. Time Innovators Laggards Early Adopters Early Majority Late Majority
StoneL Communication Sales Growth
Process Networking Introduction
Networking Communications Digital Signals Transmitted over a wire or Non-wire medium Multiple Devices Attached to the same Medium Devices may Both Send and Receive Messages Devices are Typically Intelligent
Network Protocol Fully Defines the Hardware and Software Characteristics and Procedures Used on a Particular Network Devices Operating on a Common Protocol Must Conform to the Defined Characteristics and Follow the Specified Procedures for Communication. Open Systems Interconnection (OSI) Model Used as a Framework to Define
OSI Model User Layer (Objects Used on Operating System) Application Layer (Operating System) 7 Physical Layer ( Layout & Signal Transmission) 1 Data Link Layer (Device Accessing & Bit Grouping) 2 Session Layer 5 Transport Layer 4 Network Layer 3 Presentation Layer 6 User Layer (Objects Used on Operating System) Transmission Media (Specific Type of Wire) 0
Network Topologies Trunk and Drop Hub and Spoke or Star Tree or Chicken Foot
Network Nomenclature Master/Gateway Power Supply Power Conditioner Field Device or May be Slave Segment Trunk Line Drop or Spur Drop Connector - Passive (Direct Connected) - Protected (Protection Circuit) Terminator To Other Network
Network Hierarchy
Protocol Selection Criteria
Network Architecture HSE H1
Bus Network Architecture (Allen Bradley/Rockwell) EthernetIP H1
BusNetwork Architecture (Delta V) Proprietary Ethernet H1
Networking Introduction Questions Answer True or False A communication protocol is completely defined by the type of topology and the network voltage & current levels. Drop connectors may contain protection circuits to prevent field device short circuits from affecting the bus trunk. Usually one bus network is optimal for process field applications. AS-interface would generally be best suited for simple devices like on/off valves and Foundation Fieldbus for more complex devices such as flow meters and modulating control valves.
Wireless Introduction Communication Solutions
Process Applications for Wireless Valve Monitoring/Automation I/O Transmitters Diagnostics Typical Applications: - Inside tanks or compartments - Remote areas - Mobile equipment - Redundancy - Low incidence monitoring (Manual valves, safety showers etc.)
Wireless Applications for Valve Automation Important considerations: Latency Battery Life Data requirements Signal integrity Hazardous area requirements
Market Acceptance Wireless control: Still see reluctance from End-users for wireless control Wireless monitoring is much more acceptable Wireless diagnostics retrieval is very desirable
Wireless with a Wired Network Wireless LAN Master/Gateway Power Supply AS-Interface Bus Slave (Field Device) Power Supply Repeater
Wireless Network
Wireless trends ISA SP100.11a standard - Supports multiple protocols (Hart, Profibus, Modbus, FF etc) - Defines an entire wireless architecture (sensor level is 802.15.4) - Supported by Honeywell WirelessHart is gaining momentum - Supports Hart protocol (Over 30 million installed) - Uses 2.4 GHz; 802.15.4 - Emerson - Endress + Hauser - ABB - Siemens
Hart Wireless Highlights Uses same software as Hart 7 protocol; Physical layer and data link layer are changed from hard wired to wireless. Wireless transmission defined by 802.15.4 using 2.4 GHz Band - Up to 100m line of sight transmission distances - Same physical medium as ZigBee (Assures high volume) - Utilizes mesh networking - Low power consumption and latency (powers up quickly to send message) Utilizes mesh networking to reinforce signal
Networking Introduction Questions Answer True or False A communication protocol is completely defined by the type of topology and the network voltage & current levels. Drop connectors may contain protection circuits to prevent field device short circuits from affecting the bus trunk. Usually one bus network is optimal for process field applications. AS-interface would generally be best suited for simple devices like on/off valves and Foundation Fieldbus for more complex devices such as flow meters and modulating control valves.
Wireless Communication Solutions