Hex (Convert to Hexadecimal)
The Hex function returns a hexadecimal string representation of value of type Long. The input is converted to a Long data type before it is converted to hexadecimal.
Syntax
Variable =Hex (Expression)
Example
Example #1
In the following example, a value entered into the Expression variable is converted into a hexadecimal value by the Hex function. The HexToDec function is then used to convert the hexadecimal string back to a decimal value.
This program can be tested by using the Numeric Monitor to enter the value for Expression.
'Example Program
'Use Table Monitor or Numeric Display to enter value for Expression variable
Public Expression As Long, Hexadecimal As String, Decimal
BeginProg
Scan (1,Sec,3,0)
'Convert Expression to Hexadecimal
Hexadecimal = Hex(Expression)
'convert Hexadecimal to Decimal
Decimal = HexToDec(Hexadecimal)
NextScan
EndProg
Example #2
Public FloatVar = 0.01
Public Moved As Long
Public LongVar As Long = 100
Public HexFloat As String
Public HexMoved As String
Public HexLong As String
BeginProg
Scan (1,Sec,3,-1)
'try converting floating point value directly. notice that value will be
'rounded to nearest signed integer before hexadecimal conversion
HexFloat = Hex (FloatVar)
'by moving bytes of floating point number into a long first,
'we can get hexadecimal representation of floating point number
MoveBytes (Moved,0,FloatVar,0,4)
HexMoved = Hex(Moved)
'no need to convert first to get correct hex, already a long
HexLong = Hex(LongVar)
NextScan
EndProg
Remarks
The Hex function returns a variable length string with no leading zeros. The result should be formatted as type String of at least 9 characters. If a fixed length string is required, use the Sprintf function for conversion and formatting.
The input for Hex (Expression parameter) can be a constant, variable, or expression. Expression cannot be of type String. Keep in mind that the input is converted to Long during processing. For example Hex(9.469614E-13) will result in "0" and not "2B8545E1"; 9.469614E-13 will first be converted to 0 (the closet Long representation) and then to hexadecimal. To covert a floating point number to hexadecimal first move the bytes into a Long and then into Hex (refer to earlier Example program).
Parameter
Expression
The expression on which to perform the Decimal to Hex or Hex to Decimal conversion.
Type: String (for HextoDec) or Decimal Value (for Hex)