Technical data

Absolute and symbolic

operands

You can enter the operand absolutely or symbolically (using an

assignment list) as shown in the following example:

Absolute representation: :A I 1.4

Symbolic representation: :A -Motor1

For more information on absolute and symbolic programming, refer to

your STEP 5 manual.

Application of STEP 5

operations

The STEP 5 operation set enables you to do the following:

•• set or reset and combine binary values logically

•• load and transfer values

•• compare values and process them arithmetically

•• specify timer and counter values

•• convert number representations

•• call blocks and execute jumps within a block

and

•• influence program execution

Result of logic operation RLO

The central bit for controlling the program is the result of logic

operation RLO. This is obtained as a result of binary logic operations

and is influenced by some operations.

Section 3.5 describes the whole STEP 5 operation set and explains how

the RLO is obtained. This section also includes programming examples

for individual STEP 5 operations.

STEP 5 Programming Language

CPU 928B Programming Guide

C79000-B8576-C898-01

2 - 7