Denso RC5 Especificações descarregar pdf (Página 174)

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7.9 Expression and Operator

An expression is used to return a value. There are expressions that have an

independent value and expressions that are comprised of multiple elements

linked via operators. All data type values in the PAC language are expressed

with expressions.

If the operators described in the following sections are used, the operation in

the expression can be executed.

7.9.1 Assignment Operator

Use the assignment operator [=] in the assignment statement to assign

variables. A value the on right side of the assignment operator is assigned to

the left side.

In the assignment statement, use the following commands according to the

data type.

LET, LETA, LETF, LETJ, LETO, LETP, LETR, LETRX, LETRY, LETRZ, LETX,

LETY, LETZ

Since a command can be ignored only for the LET command used to assign a

numeric value variable, the following two expressions have the same meaning.

Example: LET I1 = 5 'Assigns 5 to I1.

I1 = 5 'Assigns 5 to I1.

7.9.2 Arithmetic Operator

Use the operators listed in Table 1-3 in arithmetic operations.

An operation is executed with the priority shown in the table.

Table 1-3 Arithmetic Operators

Arithmetic

operator

Operation description Operation priority

Exponential

(Exponentiation)Operation

High

Negative sign

*, /

Multiplication, division

MOD

Remainder

+, -

Addition, subtraction Low

Note (1): An error occurs in execution if division by 0 is executed.

Note (2): If a digit overflow occurs in addition or multiplication of

integers, the overflow figures are ignored. Note that an

error does not occur.

Example: I1 = 2147483647 + 1 '2147483647 is the maximum allowable

value of integer type variable.

If the above expression is executed, the result is

-2147483648.

-2147483648 is the minimum allowable value of integer type

variables.

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