FieldServer FS-8700-21 instruction manual Appendix A.5. Configuration Properties

FS-8700-21 LonWorks Manual Page 25 of 62

Appendix A.5. Configuration Properties

Configuration Properties are implemented on the FieldServer using configuration Network Variables. Configuration Network Variables take the form of update inputs in order to be updated or read by a network management tool. Each Configuration Network Variable will have its own Map Descriptor. Since the data carried by a Network Variable is intended as a configuration property for other already declared non-configuration Network Variable(s), no Data Array needs to be assigned to its Map Descriptor.

Configuration Properties can be declared to belong to the entire Node, to an Object(s) or to a Network Variable(s). This declaration defines the scope of the Configuration Property. Configuration Properties that belong to an Object are declared as a part of the Object; Configuration Properties associated with a Network Variable(s) are declared as belonging to the Network Variable(s) etc.

A Configuration Property’s Type and Responsible Map Descriptor(s) are declared by the Configuration Network Variable’s self-documentation string as follows:

For linking to the entire node: “&0,,0\x80,*SCPT Index+” Example: “&0,,0\x80,20”

For linking to object(s):

“&1,[Object Index(s)],0\x80,*SCPT Index+” Example: “&1,0.2.3,0\x80,23”

For linking to network variable(s): “&2,*NV Index(s)+,0\x80,*SCPT Index+” Example: “&2,0.1.2.4.7,0\x80,20”

Examples of configuration network variables are presented in Section 6.3.6

Appendix A.6. LonMark Object Creation

For more information on filling out the Node Self-Documentation String as well as the relevant Network Variable Self- Documentation Strings in order to create a LonMark Object please consult the following documentation from the LonMark Interoperability Association at www.lonmark.org

Understanding LonMark Self-Documentation

LonMark Application Layer Interoperability Guidelines

The two examples given below will show how LonMark Objects can be assigned in FieldServer configuration files:

The first example uses the standard Open Loop Sensor Object (Type 1) to create a Water Temperature Sensor that will send out its current status via Network Variable Updates.

A typical recipient of these updates is given by example #2 which uses the LonMark Open Loop Actuator Object (Type 3) to create a Water Heating Element object that will interpret the Network Variable it receives and adjust power to its heating element accordingly.

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