Campbell Scientific CR9000X Measurement and Control System - Manual (Page 348)

Section 9. Program Control Instructions
The argument expression list has these parts:
Part Description
expression Any numeric expression.
To Keyword used to specify a range of values. If you use the To
keyword to indicate a range of values, the smaller value must
precede To.
Although not required, it is a good idea to have a Case Else
statement in your Select Case block to handle unforeseen
testexpression values. NOTE
You can use multiple expressions or ranges in each Case clause. For example,
the following line is valid:
Case 1 To 4, 7 To 9, 11, 13
Select Case statements can be nested. Each Select Case statement must have a
matching End Select statement.
Select Case Statement Example
The example uses Select Case to decide what action to take based on user
input.
Dim X, Y 'Declare variables.
If Not X = Y Then 'Are they equal
If X > Y Then
SELECT CASE X 'What is X.
CASE 0 To 9 'Must be less than 10.
. . . . 'Run some code.
. . . . 'Run some code.
CASE 10 To 99 'Must be less than 100.
. . . . 'Run some code.
. . . . 'Run some code.
CASE ELSE Must be something else.
. . . . 'Run some code.
END SELECT
END IF
ELSE
SELECT CASE
Y 'What is Y.
CASE 1, 3, 5, 7, 9 'It's odd.
. . . . 'Run some code.
CASE 0, 2, 4, 6, 8 'It's even.
. . . . 'Run some code.
CASE ELSE 'Out of range.
. . . . 'Run some code.
. . . . 'Run some code.
END SELECT
END IF
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