<![CDATA[Simple Data Transformation Question]]>Hi Viktor and co

Have a NetXMS 2.0.1 system in Server/Remote Agent w/Sites configuration

Have a simple data transformation question.
I'm trying to monitor temperature of some Mikrotik routerboards with SNMP via .1.3.6.1.4.1.14988.1.1.3.10.0

I need to transform the value that the Mikrotik reports by dividing the value by 10.
I've entered the following values in the Transformation option.

Simple Delta

sub main()
{
  return $1 / 10;
}

Test returns the correct results however values received by in the Last Values tab or DCI History return results of 0

Anything I'm missing here ?

Thanks

Transformation2.jpg

Transformation.jpg

Last_Values.jpg

]]>https://forum.netxms.org/topic/4272/simple-data-transformation-questionRSS for NodeFri, 13 Nov 2026 14:50:28 GMTTue, 02 Feb 2016 11:45:24 GMT60<![CDATA[Reply to Simple Data Transformation Question on Tue, 02 Feb 2016 12:59:14 GMT]]>@tomaskir said in Simple Data Transformation Question:

Hi!

return $1/10;

Is enough actually, you dont need to declare an explicit main() method/function.
See this: https://wiki.netxms.org/wiki/UM:NetXMS_Scripting_Language_(NXSL)#Script_entry_point

As for why you are seeing 0 in last values, you have "Simple delta" as delta calculation enabled.
Set delta calculation to None, and it will work.

Yikes I feel embarrassed now  :-[ :-[ :-[ :-[ :-[ :-[ :-[ :-[
Setting the delta calculation to zero sorted it right out.
I'll have to re-read the wiki again to make sure I'm understanding it right.

Thanks tomaskir and Alex for the quick help.

]]>https://forum.netxms.org/post/19077https://forum.netxms.org/post/19077Tue, 02 Feb 2016 12:59:14 GMT<![CDATA[Reply to Simple Data Transformation Question on Tue, 02 Feb 2016 12:40:33 GMT]]>$1/10

will work as well (note missing ";" in the end, that's on purpose)

]]>https://forum.netxms.org/post/19076https://forum.netxms.org/post/19076Tue, 02 Feb 2016 12:40:33 GMT<![CDATA[Reply to Simple Data Transformation Question on Tue, 02 Feb 2016 12:10:25 GMT]]>Hi!

return $1/10;

Is enough actually, you dont need to declare an explicit main() method/function.
See this: https://wiki.netxms.org/wiki/UM:NetXMS_Scripting_Language_(NXSL)#Script_entry_point

As for why you are seeing 0 in last values, you have "Simple delta" as delta calculation enabled.
Set delta calculation to None, and it will work.

]]>https://forum.netxms.org/post/19075https://forum.netxms.org/post/19075Tue, 02 Feb 2016 12:10:25 GMT