FieldServer FS-8700-21 Clients/Servers, Explicit/Implicit, XIF Files, Device Resource Files

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FS-8700-21 LonWorks Manual

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2.3Clients/Servers

The FieldServer functions as a Client when polling or sending updates on the LonWorks network and as a Server when being polled or receiving updates. The FieldServer can be bound to a maximum number of 15 LonWorks Nodes. The FieldServer recommended point limit is 1000 points for the FS-B2011 Series and 4096 points for the FS-B30 and FS-B4011.

2.4Explicit/Implicit

Clients can address Servers using explicit or implicit addressing. Clients using explicit addressing obtain their data transfer parameters directly from the FieldServer configuration file. Implicit addressing is used when a Network Management Tool such as LonMaker® is used to connect a FieldServer to other LonWorks Nodes - the FieldServer is assigned its data transfer (binding) parameters by the Network Management Tool.

2.5XIF Files

At start-up the FieldServer creates an external interface file (XIF) called fserver.xif based on the configuration file. The FieldServer differs from most other LonWorks drivers in that it is configurable and therefore its XIF is not fixed for all applications. The list of points available to the network will vary depending on the other networks connected to the FieldServer, and the requirements of the particular application. The recommended procedure for obtaining the XIF file for the FieldServer is to upload it. Refer to Appendix A.4 for details.

2.6Device Resource Files

The STANDARD device resource file covers FieldServer data type support. All Standard Network Variable Types (SNVTs) in this file are available to the user. These SNVTs are listed in Section 5.1.3. Please note that due to the sophisticated nature of LonWorks variables, it may not always be possible to typecast the full information supplied in a LonWorks variable to a simple Data Type contained in another protocol. The FieldServer supports Move and Logic functions which would allow the LonWorks variable to be split up and passed to separate simple data types, thus preventing information loss. The FieldServer supports the sending and receiving of User-defined Network Variable Types (UNVTs) on the LonWorks Network. An UNVT is simply implemented as an array of bytes of user-defined length.

2.7NV Aliases

The FieldServer currently supports a default of 63 network variable aliases to avoid network variable connection constraints. This number may be increased to a maximum of 4096.

2.8Configuration Properties

Configuration Properties (CP’s) characterize the behavior of a device in the system. Network installation tools realize this attribute and provide database storage to support maintenance operations. If a device fails and needs to be replaced, the configuration property data stored in the database is downloaded into the replacement device to restore the behavior of the replaced device in the system. Configuration properties are implemented on the FieldServer through configuration network variables. User-defined configuration property types are not supported. Appendix A.5 provides a list of standard configuration property types that are supported.

The information that follows describes how to expand upon the factory defaults provided in the configuration files included with the FieldServer.

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com Tel: (408) 262 2299 Fax: (408) 262 2269 Toll Free: (888) 509 1970 email: support@fieldserver.com

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Contents Driver Manual FS-8700-21 LonWorks Table of Contents Appendix D. SNVTType LonWorks Program ID Calculation Spid NV Updates/PollsNetwork Management Clients/Servers Configuration PropertiesExplicit/Implicit XIF FilesAdditional files required for the Driver Supplied by FieldServer Technologies for this driverProvided by the Supplier of 3 rd Party Equipment Hardware Connections Service PinNeuron ID Port Address SwitchLon LED’s LonWorks Adapter Card FS-X40 onlyMap Descriptor Names Network Variable Names Special considerationsImplicit Lon functions SNVTIndexClient Side Mapping Connection Parameters Network Management CapabilityClient vs Server Mapping FieldServer Related Map Descriptor Parameters Node ParametersTiming Parameters Driver Related Map Descriptor ParametersClient Side Map Descriptor Example Lon functions Explicit ConfigurationsDomain Table Setup Network Management Nodes Client Side Configuration ConnectionsFS-8700-21 LonWorks ManualPage 18 Map Descriptor Example 2 Polling UNVT’s Using Neuron ID to Address Devices Client Drivers only Server Side Configuration Connections FS-8700-21 LonWorks ManualPage 22 Map Descriptor Example Appendix A.2. Using NVMin, NVMax etc Appendix A.1. Using UNVT’sAppendix A.3. Throttling Mode Appendix A.4. XIF GenerationAppendix A.6. LonMark Object Creation Appendix A.5. Configuration PropertiesCfgnvui Appendix A.8. Working with Binary Data Appendix A.7. Node Status OperationAppendix A.9. Filtering Snvt Variables FS-8700-21 LonWorks Manual Appendix B.1. Echelon LonMaker Appendix B. Vendor InformationAppendix B.4. Tridium Jace Appendix B.2. Neuron SystemsAppendix B.3. Honeywell Care Appendix B.5. Trane Rover Appendix C.1. Debugging a LonWorks connection Hints and tips Appendix C.2. Error MessagesUINT32 Appendix C.3. Exposing Operation StatisticsAppendix C.7. Combining Explicit and Implicit Appendix C.4. Illegal Characters in Network Variable NamesAppendix C.5. CirconSI Limitations Appendix D. SNVTType Location array element Kilo-British Thermal 65,535 Units Mega-British Thermal Sender Range Lower ID Data Length Suggested Data Array Formats KiloJoules per Kilogram FS-8700-21 LonWorks Manual Data Length Suggested Data Array Formats Float Measurement Units Values Range Invalid Value 163.840 Type Raw SNVTmassf FS-8700-21 LonWorks Manual Data Item Measurement Units Values Range Invalid Value Parts per Million ppm FS-8700-21 LonWorks Manual Measurement Units Values Range Invalid Value SNVTpumpsensor SNVTpumpsetmn Measurement Units Values Range Invalid Value SNVTpumpsetmn SNVTpwrfactf RPM Millimeters per Second Difference Type Measurement Units Values Range Invalid Value SNVTtempsetpt FS-8700-21 LonWorks Manual Kiloliters kl Measurement Units Values Range Invalid Value SNVTzerospan
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