FieldServer instruction manual FS-8700-21 LonWorks ManualPage 22

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FS-8700-21 LonWorks ManualPage 22 of 62

6.3.4 Driver Related Map Descriptor Parameters

Column Title			Function		Legal Values
					One of the node names
Node_Name			Name of Node to fetch data from or send data to. Needed for		specified	in	“Client
Node_Name			Explicit Addressing.		Node	Descriptors”
			Explicit Addressing.		Node	Descriptors”
					above

SNVT_Index			Server Network Variable Index	0-4095

SNVT_Type			Standard network variable type of the data		See Appendix D

SNVT_Option			Specifies which record out of a complex SNVT we are after.		See Appendix A.9.1

SNVT_Units			Specifies the measurement units if something other than		See Appendix A.9.2
SNVT_Units			Metric is required		See Appendix A.9.2
			Metric is required

			Specifies the length in bytes of an UNVT. This Parameter is	1-255.		See	Appendix
UNVT_Byte_Length*			compulsory when SNVT_Type is set to UNVT, the parameter is	1-255.		See	Appendix
UNVT_Byte_Length*			compulsory when SNVT_Type is set to UNVT, the parameter is		A.1
			not used on conjunction with SNVT’s		A.1
			not used on conjunction with SNVT’s

			Specifies the Type Number to apply to this particular UNVT.	0, 146-255.			See
UNVT_ID			This Parameter is optional when SNVT_Type is set to UNVT, the	0, 146-255.			See
UNVT_ID					Appendix A.1.
			parameter is not used on conjunction with SNVT’s		Appendix A.1.
			parameter is not used on conjunction with SNVT’s

NV_Min_Value*			Network Variable updates with values less than specified in		See Appendix A.2
NV_Min_Value*			this field will be ignored.		See Appendix A.2
			this field will be ignored.

NV_Max_Value*			Network Variable updates with values higher than specified in		See Appendix A.2
NV_Max_Value*			this field will be ignored.		See Appendix A.2
			this field will be ignored.

			Network Variable updates where the value’s delta change is
			less than specified in this field will be ignored unless the
NV_Delta_Value*			Max_Scan_Time Condition has been met. Compulsory for		See Appendix A.2
			Throttling Lon Functions only. Not used on other Lon
			Functions.

NV_Selfdoc_Text			The Self-Documenting String for this Network Variable.		Normal	Text	up to a
NV_Selfdoc_Text			The Self-Documenting String for this Network Variable.		length of 40 characters
					length of 40 characters

6.3.5 Timing Parameters

Column Title			Function			Legal Values
Scan_Interval*			Seconds per scan		0-32000,
Scan_Interval*			Seconds per scan			2s
						2s

Min_Scan_Time*			Minimum Scan Time in seconds. Compulsory for Throttling Lon Functions			See	Appendix
Min_Scan_Time*			only. Not used on other Lon Functions.			A.3
			only. Not used on other Lon Functions.			A.3

Max_Scan_Time*			Maximum Scan Time in seconds. Compulsory for Throttling Lon Functions			See	Appendix
Max_Scan_Time*			only. Not used on other Lon Functions.			A.3
			only. Not used on other Lon Functions.			A.3

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Contents Driver Manual FS-8700-21 LonWorks Table of Contents Appendix D. SNVTType Network Management NV Updates/PollsLonWorks Program ID Calculation Spid Explicit/Implicit Configuration PropertiesClients/Servers XIF FilesProvided by the Supplier of 3 rd Party Equipment Supplied by FieldServer Technologies for this driverAdditional files required for the Driver Service Pin Hardware ConnectionsLon LED’s Port Address SwitchNeuron ID LonWorks Adapter Card FS-X40 onlyImplicit Lon functions Special considerationsMap Descriptor Names Network Variable Names SNVTIndexClient vs Server Mapping Network Management CapabilityClient Side Mapping Connection Parameters Node Parameters FieldServer Related Map Descriptor ParametersDriver Related Map Descriptor Parameters Timing ParametersClient Side Map Descriptor Example Explicit Configurations Lon functionsDomain Table Setup Network Management Client Side Configuration Connections NodesFS-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.3. Throttling Mode Appendix A.1. Using UNVT’sAppendix A.2. Using NVMin, NVMax etc Appendix A.4. XIF GenerationAppendix A.5. Configuration Properties Appendix A.6. LonMark Object CreationCfgnvui Appendix A.7. Node Status Operation Appendix A.8. Working with Binary DataAppendix A.9. Filtering Snvt Variables FS-8700-21 LonWorks Manual Appendix B. Vendor Information Appendix B.1. Echelon LonMakerAppendix B.3. Honeywell Care Appendix B.2. Neuron SystemsAppendix B.4. Tridium Jace Appendix B.5. Trane Rover Appendix C.2. Error Messages Appendix C.1. Debugging a LonWorks connection Hints and tipsAppendix C.3. Exposing Operation Statistics UINT32Appendix C.5. CirconSI Limitations Appendix C.4. Illegal Characters in Network Variable NamesAppendix C.7. Combining Explicit and Implicit 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