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L ON W ORKS Network Design Overview. Welcome! 1-2.

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Presentation on theme: "L ON W ORKS Network Design Overview. Welcome! 1-2."— Presentation transcript:

1 L ON W ORKS Network Design Overview

2 Welcome! 1-2

3 1-3 Course Objectives Identify network architectures Select and install network infrastructure components Select and install network devices Program the network by configuring devices and connecting network variables Commission devices Test and verify network devices and channels Optimize network and device performance Document the network design Maintain the network IMPLEMENT THE NETWORK Identify Architectures Select Network Components Install Physical Network Program Network Commission Network Test and Verify Network Optimize Network Document Network Maintain Network DOCUMENT AND MAINTAIN PLAN THE NETWORK TEST AND OPTIMIZE

4 L ON W ORKS Technology Overview

5 2-2 Objectives Review the following L ON W ORKS Technology concepts: Control Networks L ON W ORKS Benefits L ON M ARK International L ON W ORKS Terminology LonTalk Protocol Basic L ON W ORKS Components Device Interface Components L ON W ORKS Network Services (LNS ® )

6 Control Networks 1st Generation 1st Generation Centralized Architecture Centrally located processor No integrated intelligence Single point of failure Master/Slave A single master control device or panel makes the control decisions Master controller continuously polls input devices for values and directs output devices to play values Single point of failure Difficult to expand Costly to install – more wiring needed to connect sensors and actuators Proprietary programming model 2-3

7 Control Networks 2nd Generation Networked PLCs Distributed intelligence Centrally located processor Single point of failure reduced 2nd Generation Decentralized Master/Slave Added network programable logic controllers (PLCs) between central processor and devices Single master control device makes the control decisions Master controller continuously polls PLCs for values and directs output devices to play values Greatly reduced wiring requirement Reduced point of failure Proprietary programming model 2-4

8 Control Networks 3rd Generation Decentralized Automation Distributed intelligence Intelligent nodes/devices No central processor needed Single point of failure eliminated Reduced wiring requirement Can remove after installation complete Monitoring and control can be added at any point 3rd Generation Peer-to-Peer Distributed control intelligence within all control devices No single point of failure Easy to expand and add more devices Less costly wiring installation No home I/O wiring runs Event driven Devices publish control information to the network 2-5

9 The Origins of L ON W ORKS Technology Local Operating Network Echelon founded in 1988 by AC Mike Markula CEO of Apple Computer First Neuron Chip shipped in 1991 Echelon is a global company 250+ employees Nasdaq listed ELON 100+ products LonTalk is an implementation of an open protocol international standard ISO/IEC ANSI/CEA 709.1B EN

10 2-7 Benefits of the L ON W ORKS Platform Robust, reliable, proven everyday device networking protocol on a single inexpensive microchip Distributed control with reduced single point of failure Manufacturers of smart everyday devices can get to market quickly End users no longer locked into single supplier Integrators can choose best of breed devices LonTalk ISO/IEC protocol is media independent L ON W ORKS tools operate on multiple computer platforms Multi-industry standards group ensure interoperability – L ON M ARK International Overall result – Lower costs Decreased complexity Flexibility for changes and expansion More options

11 Open Systems To ensure an open interoperable system is delivered All application-specific controllers should be L ON M ARK certified Network architecture should follow the L ON M ARK Open Systems Architecture definition. Benefits Ability to chose between multiple vendors Affordable and economical service and system expansion Sub-system and device-level expansion at any time Full choice of service providers Facilitate interoperability with other vendors / systems Plethora of choices Flexible, expandable automation 2-8

12 L ON M ARK International Making Plug-and-Play A Reality LonMark International is a global membership organization created to promote and advance the business of efficient and effective integration of open, multi-vendor control systems utilizing ISO/IEC and related standards. 2-9

13 Who is L ON M ARK International? Manufacturers, distributors, engineers, system integrators and end-users California based non-profit corporation. Over 500 members worldwide Over 750 certified interoperable products Over 70 approved functional profiles Oversees open systems professional certification The word L ON M ARK itself is a trade association symbol 2-10

14 L ON M ARK - A Virtual Whos Who in Control Networking

15 Look for the L ON M ARK Label Ensures that products will interoperate in the most efficient and economical way possible in an open, integrated control system Includes the number designating the latest version of the L ON M ARK Interoperability Guidelines as shown here. Certifies product conformance following technical guidelines and standards developed by industry specific task groups SFP - standard functional profiles SNVT - standard network variable types SCPT - standard configuration property types Provides a resource of device information Controllers, actuators and application-specific devices can be L ON M ARK Certified 2-12

16 A-3 LON Speak L ON W ORKS LonTalk LNS L ON M ARK LonMaker LonPoints Network Integrator Neuron Chip Device/Node i. LON Domain/Subnet/Node Client/Server Channel Network Variable Binding Configuration Property Functional Profile Functional Block Plug-In External Interface File (XIF) SFPT or SFP SNVT UNVT SCPT and UCPT

17 2-13 L ON W ORKS – Distributed Control Intelligence Puts the control intelligence inside the device where the control happens Each device may subdivide multiple control functionality into objects called functional blocks Could be I/O, controller, system wide functions or a combination Any device can communicate with any other device using standard data types Can create large, powerful and flexible networks across LANs and WANs Reduces installation costs compared to Master/Slave systems Flat LonWorks architectures allow devices to communicate with each other without passing data through central controller

18 2-14 L ON W ORKS Network Program The network image is a collection of configured devices and their associated connections (aka network variable bindings) A network management tool is initially required to configure device behavior and define the network variable connections When the tool is finished it can go away! L ON W ORKS uses an event driven control process

19 2-14 LonTalk Protocol Communications protocol - language of L ON W ORKS Open and published standard available to anyone ISO/IEC (ANSI/CEA 709.1) Designed for control applications - not data applications Includes all 7 layers of the ISO Open Systems Interconnection Reference Model Implemented on all L ON W ORKS devices through Neuron Chip or equivalent processor Media independent Physical Connection Media Access Addressing and Routing Message Service Network Management Network Variables Neuron C Program Physical Data Link Transport Session Presentation Application Network Physical Media

20 2-15 LonTalk Standards ISO/IEC Open Data Communication in Building Automation, Controls and Building Management ANSI/CEA B Control Network Protocol Specification EN :2005 Open Data Communication in Building Automation, Controls and Building Management GB/Z Control Network LonWorks Technology Specification IEEE 1473 Standard for Communications Protocol Aboard Trains Physical Connection Media Access Addressing and Routing Message Service Network Management Network Variables Neuron C Program Physical Data Link Transport Session Presentation Application Network Physical Media

21 ISO/IEC and Related Control Standards International Electrotechnical Commission International Organization for Standardization ISO/IEC Part 1: Protocol Stack ANSI/CEA B-2000 EN :2005 GB/Z ISO/IEC Part 2: Twisted Pair Communication ANSI/CEA EN GB/Z ISO/IEC Part 3: Power Line Channel Specification ANSI/CEA EN GB/Z ISO/IEC Part 4: IP Communication ANSI/CEA-852 EN GB/Z ISO/IEC Open Data Communication in Building Automation, Controls and Building Management – Control Network Protocol

22 2-17 L ON W ORKS Network Elements Channel Media that devices communicate over Device Actuator, sensor, controller or combination L ON M ARK Certified or compliant Network Tool Network management tool Human machine interface (HMI) Protocol analysis Channel Network Tool Device

23 Network Integration/ Management Tools Install devices on a network and enable them to become active participants in the network by Assigning logical network addresses Binding network variable connections Configuring devices Commissioning devices Required for non-self installed networks Also referred to as Network Integration Tools 2-18

24 2-19 Network Variables The dynamic data sent or received by network devices Create the logical interface to the network Signal-type independent – temperature, pressure, volume, flow, etc. SNVTs are standard network variable types as defined by L ON M ARK Known and documented structure, size, range, resolution and scaling for each field. UNVTs (user network variable types) are manufacturer defined

25 2-20 Configuration Properties Define devices operating or application behavior such as setpoint, high limits, throttle. SCPTs are standard configuration property types defined by L ON M ARK Known and documented structure, format, range, etc. SCPT Master List available on UCPTs (user configuration property types) are manufacturer defined

26 2-21 Functional Blocks Defines a single function within a device – sensor, actuator or controller Devices can include multiple functional blocks Include network variables (NV) and configuration properties (CP) Standard Functional Profiles (SFP) are templates defined by L ON M ARK which describe the application-layer interface User-defined functional profiles (UFP) represent manufacturer specific control functions

27 2-22 L ON M ARK Standard Functional Profiles - SFP Describe in detail the application-layer interface required on interoperable L ON M ARK devices for specific, commonly used control functions Ensure interoperability by defining Mandatory and optional SNVTs Mandatory and optional SCPTs Default and power-up behaviors A devices primary function must be based on SFP if it is to be certified to the L ON M ARK Interoperability Guidelines. To be L ON M ARK certified, a device must contain one or more SFP Every SFP must include at least one network variable or configuration property

28 Device Interface Elements Functional Blocks Network Variables Configuration Properties Hardware characteristics Device External Interface File (.XIF) Created by device manufacturer Spawned from the device application program 2-23

29 Demonstration: L ON W ORKS Resources L ON M ARK Web site SNVT/SCPT master list Interoperability guidelines Functional profiles Case study examples

30 2-25 LNS ® – L ON W ORKS Network Services Network management platform Foundation for open and interoperable networks Provides unified functions - directory, installation, management, monitoring and control services to a Windows program Client/server architectures Supports open configuration tools from multiple vendors Multiple personnel can simultaneously access network and application management services and data from any number of client tools Provides access to any point of network information from any point on the network LNS based tools include resource files

31 2-26 LNS Server Maintains network database of project data stored in standardized format Enables and coordinates multiple points of access to its services and data Must be present on the network whenever management operations are performed LNS Server Utility LNS Server Local Client Application(s) LNS Tool LNS Plug-In Database Remote Access Remote Client Application(s) LNS Tool LNS Plug-In L ON W ORKS Network Provides network services Network installation and configuration Network maintenance and repair System monitoring and control

32 2-27 LNS Clients Local client application - one that is running on the same PC as the LNS Server and database. Remote client application - one that is running on a PC that does not contain the LNS database or run the LNS Server. LNS Server Utility LNS Server Local Client Application(s) LNS Tool LNS Plug-In Database Remote Access Remote Client Application(s) LNS Tool LNS Plug-In Client - LNS applications, capable of running locally or remotely. A single network can simultaneously be accessed by several local and remote applications. L ON W ORKS Network

33 2-28 Summary and Review 1.What creates the logical interface to a L ON W ORKS network? network variable 2.What defines a devices operating or application behavior ? configuration properties 3.What provides unified functions - directory, installation, management, monitoring and control services to a Windows program? LNS – L ON W ORKS Network Services 4.How many layers of the ISO standard for networking does the LonTalk protocol include? 7 (seven) 5.What must a devices primary function be based on if it is to be certified to the LONMARK Interoperability Guidelines? SFP - Standard Functional Profile 6.What does SNVT stand for? SCPT? Standard Network Variable Type, Standard Configuration Properties

34 Selecting Network Architectures and Topologies

35 3-2 Objectives Describe the steps for creating a network design Choose an appropriate network architecture Explain the difference between monitoring and control functions vs. network management tasks Identify possible network topologies Select design and installation strategies Choose a network design tool

36 3-3 Network Design Process L ON W ORKS networks are design/build networks Engineered networks are built to fit any application, architecture, and customer need Success requires planning Using the right parts Logical design sequence Safe installation process Network sustainability IMPLEMENT THE NETWORK Identify Architectures Select Network Components Install Physical Network Program Network Commission Network Test and Verify Network Optimize Network Document Network Maintain Network DOCUMENT AND MAINTAIN PLAN THE NETWORK TEST AND OPTIMIZE

37 3-4 Planning the Network Design Project information Who is the customer? Control requirements What does the customer require? Network architecture What topologies are possible? How will network tools access the network? How will end users access network information? How will the network design be created? Who will create the design? Where? How will the network program be implemented? Commissioning, testing, verification? How will the network be maintained? Adds, moves, changes, backups, replacements?

38 3-5 Job Aid – Network Design Plan Worksheet Begin to design your network with the Network Design Plan Worksheet

39 Installation Options Interoperable Self-Installation (ISI) Lowest cost Suitable for simple networks with simple configuration and connections Standard installation tool using an i.LON SmartServer Simplest solution for small networks Suitable for simple networks with simple configuration and no connections Standard installation tool such as LonMaker Lowest development cost Best flexibility and network documentation Custom installation tool Most customized solution Highest development cost 3-6

40 Network Architectures 3-7

41 Simple Device Network 3-8 Devices communicate with each other directly, no head end or master controller required. Network management tool is not required after devices have been commissioned A portable network manage- ment tool is required to perform network maintenance tasks such as adds, moves and changes Portable Network Management Tool NM Tool

42 3-9 Local Client Applications LNS App(s) Config Server LNS Server Local IP Client IP-852 Network i.LON IP-852 NIC LNS database resides on same computer as the network tool LNS network management tools and Human Machine Interfaces (HMIs) communicate with devices via network services interface (NSI) hardware/ software Local NSI interface over Twisted Pair, Power Line, RF Local IP client over IP-852 i.LON router connects IP channel to L ON W ORKS channel Config Server must be running on a PC connected to IP-852 channel Local IP client over telephone network Uses PPP (point-to-point protocol) Requires RNI Poor performance SNTP server may be required if IP-852 channel is internet NSI LNS App(s) LNS Server Local Client

43 Remote Lightweight Client Applications Communicate with LNS Server via IP network (not to be confused with IP-852 channel.) Doesnt have data server so can only communicate with devices on physical network through the L ON W ORKS interface of the server LNS App(s) Remote Lightweight Client LNS Server NSI NIC IP Network Server 3-10 Network management, monitoring and controlling tasks are all routed through the LNS Server. Potential bottleneck in the LNS Server if multiple remote lightweight clients monitoring and controlling multiple data points simultaneously.

44 Communicate with the LNS Server PC through any L ON W ORKS channel, typically IP-852 or TP/XF Has data server so can communicate directly with devices through its own network interface (any L ON W ORKS channel including IP-852). Remote Fullweight Client Applications 3-11 NIC LNS App(s) Full Client Config Server LNS Server NIC Server IP-852 Network i.LON IP-852 NSI LNS App(s) Full Client NSI LNS Server Server TP/XF-1250 High Speed Backbone Router Network management tasks are routed through the LNS Server. Monitoring and controlling tasks are sent directly to the network.

45 Telephone Connections to the Network Modem SLTA-10 PSTN NM Tool NSI HMI Tool NM Tool NSI Modem PSTN HMI Tool NM Tool i.LON 100 with Modem Option SLTA (Serial LonTalk Adapter) with modem locally installed at network Modems allow the RS-232 line to be extended through the public switched telephone network LinkManager software required by LNS application i. LON 100 can also provide remote IP connectivity with optional internal modem Supports connection to an external GSM or GPRS modem 3-12

46 Web Server 3-16 Simple Web Browser Based Client i. LON 100 or SmartServer web-based client performs monitoring and control tasks. Advanced web server features provide XML, JavaScript, DHTML and SOAP interfaces to enterprise systems. Customizable and simple to develop with a easy to use HMI that can represent or write network variable values in graphical or text formats. i. LON 100 may not perform network management tasks without access to LNS server. SmartServer may perform network management tasks in Standalone mode. Web Browser NIC IP Network i.LON SmartServer

47 3-17 Internet/Intranet IP Backbone Internet to L ON W ORKS (i. LON devices) can be used to create one network by connecting remote locations over IP-852 channels LNS Server is not required for routing packets Up to 256 IP-852 devices per channel IP-852 can use existing IP infrastructure i.LONs IP-852 i.LON IP-852 Devices in London i.LONs IP-852 Devices in Lisbon Devices in Beijing Devices in Hong Kong Devices in New York Intranet 3 (IP) Intranet 1 (IP) Intranet 2 (IP) NIC Internet NIC SNTP Server 12:10:15 Web Browser

48 3-18 Monitoring/Control and Network Management Network management/maintenance tasks are routed through the LNS server add/remove devices and routers change channels bind NVs adjust CPs Monitoring and Control applications are sent directly to the network get updates (monitor network variables) send updates (write to network variables) On a remote lightweight client, monitoring, and controlling tasks as well as network management tasks are routed through the LNS Server LNS Server Monitoring and Control Monitoring and Control Management and Maintenance Management and Maintenance Monitoring - The ability to display real-time data about a network


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