Table of Contents

NT_GET_REMOTE_TREND (216)

Gets the real-time trend data of a view table column.

uint elementId = 1530;
uint columnId = 5002;
uint columnPos = UInt32.MaxValue; // Means not specified.
uint isDirectView; // 0=false, 1=true.
uint agentId = 400;

uint[] elementDetails = new uint[] { elementId, columnId, columnPos, isDirectView, agentId };

string primaryKey = "1";
string dateTime = "2017-01-20 00:00:00"; //YYYY-MM-DD HH:mm:SS);

string[] options = new string[] { primaryKey, dateTime };

object result = protocol.NotifyDataMiner(216 /* NT_GET_REMOTE_TREND */, elementDetails, options);

Parameters

  • elementDetails (uint[]):
    • elementDetails[0]: The element ID.
    • elementDetails[1]: The column ID.
    • elementDetails[2]: The column position. Only required when elementDetails[1] specifies the table ID. Otherwise set to UInt32.MaxValue.
    • elementDetails[3]: 0 in case it is not a direct view table, 1 in case it is a direct view table
    • elementDetails[4]: The Agent ID of the element.
  • options (string[]):
    • options[0]: The primary key.
    • options[1]: The starting timestamp as of which the trend data should be returned. Format: YYYY-MM-DD HH.mm:SS. This is optional (i.e., when all trend data should be returned, provide a string array of size one holding just the primary key).

Return Value

  • object[] result:

    • result[0]: string array, denoting the meaning of the cells (e.g. ["chValue","dtFirst","iStatus","dtLast"]).

    • result[1]: string array containing the trend data.

      string[] data = (string[]) result[1];

      where

      • data[i*5] = value
      • data[i*5+1] = dtFirst value
      • data[i*5+2] = iStatus value
      • data[i*5+3] = dtLast value

Remarks

  • The use of this call is deprecated. Instead, the GetTrendDataMessage SLNet message should be used.
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