dpElementType()

Returns the data type.

Synopsis

int dpElementType(string dp);

Parameter

Parameter Meaning
dp Datapoint element

Return Value

In the event of a failure dpElementType() returns -1, otherwise the integer value of the data type.

Integer constant int value Comment
DPEL_BIT32 24 bit pattern
DPEL_BIT32_STRUCT 16 bit pattern structure
DPEL_BIT64 50 bit pattern
5DPEL_BLOB 46 blob (binary large object)
DPEL_BLOB_STRUCT 47 blob structure
DPEL_BOOL 23 bit
DPEL_BOOL_STRUCT 15 bit structure
DPEL_CHAR 19 character
DPEL_CHAR_STRUCT 11 character structure
DPEL_DPID 27 DP-Identifier
DPEL_DPID_STRUCT 39 label structure
DPEL_DYN_BIT32 8 dynamic array for bit pattern
DPEL_DYN_BIT32_STRUCT 35 dynamic bit-pattern array structure
DPEL_DYN_BIT64 51 dynamic array for bit pattern
DPEL_DYN_BLOB 48 dynamic blob
DPEL_DYN_BLOB_STRUCT 49 dynamic blob structure
DPEL_DYN_BOOL 7 dynamic bit array
DPEL_DYN_BOOL_STRUCT 34 dynamic bit array structure
DPEL_DYN_CHAR 3 dynamic character array
DPEL_DYN_CHAR_STRUCT 30 dynamic character array structure
DPEL_DYN_DPID 29 dynamic DP-Identifier array
DPEL_DYN_DPID_STRUCT 38 dynamic DP-Identifier array structure
DPEL_DYN_FLOAT 6 dynamic number array for floating decimal point
DPEL_DYN_FLOAT_STRUCT 33 dynamic number structure for floating decimal point
DPEL_DYN_INT 5 dynamic integer array
DPEL_DYN_INT_STRUCT 32 dynamic integer structure
DPEL_DYN_LANGSTRING 44 multilingual dynamic text array
DPEL_DYN_LANGSTRING_STRUCT 45 multilingual dynamic text structure
DPEL_DYN_STRING 9 dynamic text array
DPEL_DYN_STRING_STRUCT 36 dynamic text-array structure
DPEL_DYN_TIME 10 dynamic time array
DPEL_DYN_TIME_STRUCT 37 dynamic time array structure
DPEL_DYN_UINT 4 dynamic array of positive whole numbers
DPEL_DYN_UINT_STRUCT 31 dynamic array of positive integers
DPEL_DYN_LONG 55 dynamic array of Integer values (64 bit)
DPEL_DYN_ULONG 59 dynamic array of Positive integer values (64 bit)
DPEL_FLOAT 22 floating point system
DPEL_FLOAT_STRUCT 14 number structure for floating decimal point
DPEL_INT 21 integer
DPEL_INT_STRUCT 13 integer structure
DPEL_LANGSTRING 42 description
DPEL_LANGSTRING_STRUCT 43 description structure
DPEL_LONG 54 Integer value (64 bit)
DPEL_STRING 25 text
DPEL_STRING_STRUCT 17 text structure
DPEL_STRUCT 1 structure
DPEL_TIME 26 time
DPEL_TIME_STRUCT 18 time structure
DPEL_TYPEREF 41 datapoint type reference
DPEL_UINT 20 unsigned integer
DPEL_UINT_STRUCT 12 structure of unsigned integers
DPEL_ULONG 58 Positive integer value (64 bit)

Errors

The errors can be retrieved with getLastError(). This includes missing arguments or when the datapoint does not exist

Description

The function dpElementType() returns the data type of a datapoint element.

Condition as a function of the data type of the datapoint element valve17.opening.

main()
{
  if (dpElementType("Valve17.opening")==DPEL_FLOAT)
  else if(dpElementType("Valve17.opening")==DPEL_INT)
}

Assignment

Datapoint function

Availability

CTRL