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Chapter 10 Assignment Statements

10-1

10.1 Variables

LET (Statement) [Conforms to SLIM]

Function

Assigns a value to a variable.

Format

[LET] <Variable name> = <Arithmetic expression>

Explanation

You can ignore [LET].

As a rule the <variable name> type and the <arithmetic expression> type must

be the same.

If the variable name type and the arithmetic expression type are different, they

are converted as follows.

• <Variable name> is converted to the variable type.

• When a real variable is converted to an integer, the decimal places are

rounded down.

• When a double precision variable is converted to a single precision real

variable, the value is rounded to 7 significant digits.

• Calculations are performed based on the precision of the type with the

higher precision.

Example

6-/4-axis DEFINT li1, li2

LET li1 = li2 + 1 'Assigns the value of (li2 + 1) to li1.

li1 = li2 + 1 'Assigns the value of (li2 + 1) to li1 (same as the

above 'instruction statement).

6-axis DEFPOS lp1, lp2

DEFJNT lj1, lj2

lp1, = lp2 + (10, 10, 10, 0, 0, 0)

'Assigns the value of (lp2 + (10,10,10,0,0,0)) to

lp1

lj1, = lj2 + (10, 20, 30, 40, 0, 0)

'Assigns the value of (lj2 + (10,20,30,40,0,0)) to

lj1

4-axis DEFPOS lp1, lp2

DEFJNT lj1, lj2

lp1, = lp2 + (10, 10, 10, 20)

'Assigns the value of (lp2 + (10, 10, 10, 20) ) to

lp1

lj1, = lj2 + (10, 20, 30, 40)

'Assigns the value of (lj2 + (10, 20, 30, 40) ) to

lj1

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