Table of Contents
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Preface
Structure of the
Chapters 1 to 4 of the manual contain the most important instructions
Manual
for commissioning and using the PG 720. Chapters 5 to 8 are
reference sections required in special situations.
Setting up and getting to know your device
Before you start to use your programming device, you should read
about setting up the device in Chapter 2 and about the components
and functions of the PG 720 in Chapter 3.
Installation
Chapter 4 describes the basic steps necessary for commissioning the
PG 720. This chapter also contains instructions for working with
submodules and memory cards for programmable logic controllers and
additional interfaces.
Expansion
Chapter 5 describes how to expand your PG 720 (for example,
installation of memory expansions). Please observe the safety
instructions in this section.
Configuration
Modifications made to the system hardware may make it necessary for
you to adapt the original hardware configuration. This is described in
Chapter 6.
Error/fault diagnostics
Chapter 7 explains how to deal with simple faults and problems that
you can diagnose and, in some cases, eliminate yourself.
Reference data
Chapter 8 contains information about hardware addresses, interrupt
assignments, and connecting cables.
ESD guidelines
The guidelines on the handling of electrostatically sensitive devices are
particularly important for service and maintenance technicians who are
installing expansion units or carrying out error analysis with the
PG 720.
Glossary
The glossary defines and explains important terms.
Alphabetical index
The alphabetical index will help you to find passages in the text relating
to important terms and keywords quickly and reliably.
Additional
If you have any questions concerning subjects not covered in the
Assistance
manual, simply get in touch with the Siemens representative in your
area or call the SIMATIC Hotline. The addresses are listed in your
Product Information Bulletin.
If you have any questions about the manual itself or would like to make
or suggestions, please complete the reply card at the end of the
manual. We would also appreciate it if you would include your own
opinion and appraisal of the manual on the reply card.
iv
PG 720 PII Programming Device
C79000-G7076-C756-02
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