FieldServer LonWorks FS-8700-21 - Manual (Page 23)

FS-8700-21 LonWorks Manual Page 23 of 72
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7.3.3.2 Driver Related Map Descriptor Parameters
Column Title Function Legal Values
Node_Name
Name of Node to fetch data from or send data to. Needed
for Explicit Addressing. One of the node names specified
under Client Node Parameters
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
Metric is required
See Appendix A.9.2
UNVT_Byte_Length*
Specifies the length in bytes of an UNVT. This Parameter is
compulsory when SNVT_Type is set to UNVT, the parameter
is not used on conjunction with SNVT’s
1-255. See Appendix A.1
UNVT_ID
Specifies the Type Number to apply to this particular UNVT.
This Parameter is optional when SNVT_Type is set to UNVT,
the parameter is not used on conjunction with SNVT’s
0, 146-255. See Appendix A.1.
NV_Min_Value*
Network Variable updates with values less than specified in
this field will be ignored.
See Appendix A.2
NV_Max_Value*
Network Variable updates with values higher than specified
in this field will be ignored.
See Appendix A.2
NV_Delta_Value*
Network Variable updates where the value’s delta change is
less than specified in this field will be ignored unless the
Max_Scan_Time Condition has been met. Compulsory for
Throttling Lon Functions only. Not used on other Lon
Functions.
See Appendix A.3
NV_Selfdoc_Text The Self-Documenting String for this Network Variable.
Normal Text up to a length of 40
characters. Defaults to "" for
parameters using string values and 0
for parameters using numeric values
7.3.3.3 Timing Parameters
Column Title Function Legal
Values
Scan_Interval* Seconds per scan
0-32000,
2s
Min_Scan_Time*
Minimum Scan Time in seconds. Compulsory for Throttling Lon Functions only. Not used
on other Lon Functions. See 0
Max_Scan_Time*
Maximum Scan Time in seconds. Compulsory for Throttling Lon Functions only. Not used
on other Lon Functions. See 0