User Guide

FS-8700-21 LonWorks Manual Page 35 of 62
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Appendix C.4. “Illegal” Characters in Network Variable Names
Spaces
Spaces may not be used in Network Variable Names. The driver automatically replaces all spaces with
underscores at start-up.
Brackets
Lonmaker truncates a name from where a bracket is used. e.g. a name like nviTest[1]Input shows as
nviTest . Brackets are therefore not able to be used in Network Variable Names.
Appendix C.5. Circon_SI Limitations
Circon_SI does not recognize whitespace; %; -
The maximum number of Network Variables under Circon_SI is limited to 255 per node.
Set the Connection_Type parameter in the configuration file per the following example. This will ensure that all
illegal characters are replaced with underscores, and that the number of Network Variables per Node is limited to
255 in the configuration.
Example
// Client Side Connections
Connections
Adapter
,Protocol
,Connection_Type
LonWorks
,LonWorks
,Circon_SI
Appendix C.6. Service types currently supported for network variable messages
Currently the service type for network variable update messages is fixed to acknowledged service. Request-
response service is used for network variable poll and network management fetch messages.
Appendix C.7. Combining Explicit and Implicit
To ensure undisturbed communication between the network management tool and the FieldServer during the
commissioning, binding or monitoring processes, the timeouts of the explicitly addressed variables (Map
Descriptors) might need to be set to values lower than the message timeouts used by the network management
tool (LonMaker for Windows).
LonWorks FieldServer Performance
No
Desciption
Min
Typ
Max
Units
1
FieldServer startup time with 4096 network variables
-
6.5
-
Minutes
2
Time to commission FieldServer with 4096 network variables
-
-
40
Minutes
3
Time to complete a network variable updFieldServersbetween two
FieldServers (acknowledged service)
-
40
-
Milli-
seconds
4
Time to complete a networFieldServersoll message between two
FieldServers (request/response service)
-
125
-
Milli-
seconds
5
Time to complete a network manageFieldServers variable fetch message
between two FieldServers (request/response service)
-
125
-
Milli-
seconds