VBScript Reference Manual for InduSoft Web Studio

VBScript Reference Manual InduSoft Web Studio
Or Operator (Or, |)
Description Performs a logical disjunction on two expressions.
Usage result = expression1 Or expression2
Arguments result
Any variable.
expression1
Any valid expression.
expression2
Any valid expression.
Remarks If either or both expressions evaluate to True, result is True. The following table illustrates how
result is determined:
If expression1 is And expression2 is Then result is
True True True
True False True
True Null True
False True True
False False False
False Null Null
Null True True
Null False Null
Null Null Null
The Or operator also performs a bitwise comparison of identically positioned bits in two numeric
expressions and sets the corresponding bit in result according to the following table:
If bit in expression1 is And bit in expression2 is Then result is
0 0 0
0 1 1
1 0 1
1 1 1
See also AND Operator, NOR Operator, XOR Operator
Example: Dim alarm1, alarm2
Dim alarm_light
If ( (alarm1 = True) Or (alarm2 = True)) then
alarm_light = True
Else
alarm_light = False
End If
Example a = 5 ‘ a = 5 (bitwise 0000 0000 0000 0101)
b = 4 ‘ b = 4 (bitwise 0000 0000 0000 0100)
MyResult = a Or b ‘ Result = 5
108 InduSoft, Ltd.