TypeOf (Data Type Code)
The TypeOf function returns an integer that represents the data type code of a variable.
Syntax
Variable=TypeOf ( TypeVar )
Example
The following program demonstrates the use of the TypeOf function to return the datatype code of different variables.
Public Type(6) as Long
Public RefTemp,Batt_Volt,TypeFloat
Public TypeLong As Long,TypeString As String
Public TypeBool as Boolean
DataTable (Table1,1,9999)
Sample (1,RefTemp,FP2)
Sample (1,Batt_Volt,IEEE4)
EndTable
BeginProg
Scan (1,Sec,0,0)
Battery (Batt_Volt)
Type(1) = typeof(TypeFloat) 'returns data type code 24
Type(2) = typeof(TypeLong) 'returns data
type code 20
Type(3) = typeof(TypeString)'returns data type code 11
Type(4)= typeof(TypeBool)'returns data type code 28
Type(5) = typeof(Table1.RefTemp) 'returns data type code 7
Type(6) = typeof(Table1.Batt_Volt)'returns data type code 24
CallTable Table1
NextScan
EndProg
Parameters
TypeVar (Variable Datatype)
The variable for which to return the data type code. If the TypeVar parameter passed in is not a simple variable (i.e., is an expression or a constant) then 0 is returned.
See the following list for the data type code returned for different variable or data types. Note that these data type codes are for the CR6 dataloggers that use big-endian Endianness refers to byte order. With the little-endian format, bytes are ordered with the least significant byte (the "little end") first. With the big-endian format, bytes are ordered with the most significant byte ("big end") first. The CR300, GRANITE 9, and GRANITE 10 dataloggers use the little-endian format. The CR800, CR1000, CR3000, CR6, CR1000X, and GRANITE 6 use the big-endian format. Byte order when sending string variables as serial data is identical in big-endian and little-endian CSI dataloggers. Only numeric values sent as multiple bytes require attention to big-endian and little-endian issues. format. Dataloggers that use little-endian format (for example, CR300, CR350, GRANITE 9, GRANITE 10) return different data type codes.
| Code | Description |
|---|---|
| 1 | UINT1 – One-byte unsigned integer |
| 2 | UINT2 – Two-byte unsigned integer with most significant byte first |
| 3 | UINT4 – Four-byte unsigned integer with most significant byte first |
| 6 | Long - 32-bit integer with most significant byte first |
| 7 | FP2 - Two-byte floating point in final storage format |
| 9 | IEEE4 - Four-byte floating point in big-endian format |
| 11 | String - ASCII string |
| 14 | NSec – a composite of two Int4 values that represent a time stamp as seconds since midnight 1 January 1990 and nanoseconds into the second, respectively |
| 17 | Bool8- a bit field of 8 bits used for representing ports and flags |
|
18 |
IEEE8 – Eight-Byte double-precision, 64-bit floating-point value |
| 28 | Boolean – 4-byte value where 0 is false and any other value is true |
Type: Variable