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6
nviParCmd
This input network variable is used to read and write the parameters. The parameter addresses are
determined in the application. Every parameter and actual value has been given an ID number in the
application. The ID numbering of the parameter as well as the parameter ranges and steps can be
found in the application manual in question. The parameter value must be given without decimals.
Find the ID numbers of each parameter/actual value in the application manual. The ID numbers are
grouped as follows:
Parameter ID Group Description
0 Not used
1 … 98 Actual Values
99 Active Fault Code
100 Not Used
101… 899 Parameter
900 … 999 Reserved Reserved for LonWorks board internal
usage
1000 Not Used
1001…1999 Parameter
Table 6-5. Grouping of ID numbers
Examples
Data format in examples is:
- learn selector <byte(3) byte(2) byte(1) byte(0)> day hour minute second millisecond
x = meaningless.
Example1
Write to parameter number 102 (Max frequency “Basic Application par. ID102”) value 4500 (45Hz).
Write command to nviParSet
- LN_LEARN_CURRENT 102 <x x 11 94> x x x x
If the write command is successful then nvoParOut value is
- LN_LEARN_CURRENT 102 <0 0 11 94> 0 0 0 0
If the write command fails then nvoParOut value is
- LN_NUL 102 <0 0 11 94> 0 0 0 0
Example2
Read parameter number 112 (Nominal speed of the motor “Basic Application par. ID112”) default
value 1440 (1440 rpm).
Read command to nviParSet
- LN_RECALL 112 <x x x x> x x x x
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