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Introduction to STEP 5
Each method of representation has its special characteristics. Therefore, a program block that has
been programmed in STL cannot necessarily be output in CSF or LAD form. The graphic represen-
tations are not compatible to each other either. However, programs in CSF or LAD can always be
converted to STL. Figure 7-1 illustrates these points in a diagram.
Figure 7-1. Compatibility of STEP 5 Methods of Representation
The STEP 5 programming language has the following three operation types:
•
basic
•
supplementary
•
system
Table 7-1 provides further information on these operations.
Application
Methods of
Representation
Special features
Refer to Chapter 8 for a description of all operations and programming examples.
7-2
CSF
STL
Table 7-1. Comparison of Operation Types
STEP 5 PROGRAMMING LANGUAGE
Basic
Operations
in all blocks
STL, CSF, LAD
LAD
Supplementary
Operations
only in function
blocks
STL
for users with good
system knowledge
S5-115U Manual
System
Operations
only in function
blocks
STL
EWA 4NEB 811 6130-02b
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