Technical data

Chapter 6 This covers the special functions integrated in the system program. It
tells you how to use the special functions and how to call and assign
parameters to the special function OBs. The chapter also explains how
to recognize and deal with errors in the processing of a special
function.
Chapter 7 This describes the use of data block DX 0 and its structure. The chapter
informs you of the significance of the various DX 0 parameters. Based on
examples, you will learn how to create data block DX 0 or how to assign
the parameters in a screen form.
Chapter 8 This is a reference section for experienced system users. It provides
information about the memory organization of the CPU 928B and
certain system data words which contain information that can be
called up by the user.
Chapter 9 This is also for experienced system users. The chapter explains how to
address data in certain memory areas using absolute addresses.
Chapter 10 This explains when the multiprocessor mode can be used and how
data can be exchanged between the CPUs and CPs. The chapter
provides information about programming for multiprocessor operation.
The remainder of the chapter provides detailed information and
application examples for exchanging larger amounts of data in the
multiprocessor mode (multiprocessor communication).
Chapter 11 This tells you how to connect your CPU to a PG and the functions
provided by the PG software to test your STEP 5 program.
Chapter 12 This contains the Appendix with technical specifications of the CPUs
which can be used on the S5-135U, some reference tables with
important information on error diagnostics and an ISTACK evaluation
example.
How to Use this Manual
CPU 928B Programming Guide
C79000-D8576-C898-01
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