Siemens S5-135U/155U System Manual page 12

Notes on Using this Manual and on the CE Symbol
How the Manual is
Given as a guide in the following are pointers on how this manual is
Organized
organized; they will assist you when using your S5-135U/155U
programmable controller.
Which of the remaining chapters of this manual you may require when
working with your PLC will depend on the extent of your automation task
and on the configuration of your PLC.
For a basic configuration in single-processor operation without expansion
units, you will need the following chapters:
To configure your PLC with expansion units (EUs) you will need the
following chapters:
1-2
At the start of this manual you will find the "Safety-Related Guidelines"
and the "ESD Guidelines." You must observe these to the letter and
follow them during the entire time you are working with the
S5-135U/155U PLC. If your PLC requires repair, you must observe the
Repair Guidelines in Section 4.1.4.
Chapter 3 contains the Installation Guidelines with information on
interference-free installation of the S5-135U/155U PLC.
Chapter 4 describes the central controller (CC) in Section 4.1. Described
are the technical features, installation, startup and maintenance of the CC.
Section 4.3 describes the power supply units. You will find a separate
description of the 6ES5 955-3NA12 power supply unit in Section 4.5.
Both sections describe the installation and startup as well as the necessary
maintenance on the power supply units. The 24 V/4 A load power supply
is described in Section 4.4.
Chapter 5 contains the instructions for the individual CPUs. Described
here are the technical features, installation and startup of the individual
CPUs. The various methods of operating the CPUs are also described, as
are the CPU statuses where they can be directly indicated by the LEDs on
the module. If you use memory submodules or memory cards (CPU 948),
you can look up the necessary information in Sections 5.7 to 5.9.
Chapter 8 and Chapter 9 describe the digital and analog I/O modules.
Described here are the installation, wiring and operation of these
modules. Individual I/O modules exhibit specific features which are
discussed in separate chapters.
Chapter 2 shows how you can configure a PLC with expansion units in a
centralized or distributed arrangement.
Described in Chapter 4, Section 4.2, are the EU 183U, EU 184U, EU
185U and EU 187U. Those EUs which operate with their own power
supply unit are described in Section 4.3.
Chapter 7 describes the interface modules (IMs) which serve for data
communication between central controllers and expansion units.
System Manual
C79000-G8576-C199-06