S7-300, CPU 31xC and CPU 31x: Installation 
Operating Instructions, Edition 08/2004, A5E00105492-05 
1-1 
Guide to the S7-300 documentation 
1
Overview 
This guide leads you through the S7-300 documentation. 
Selecting and configuring 
Table 1-1  Ambient influence on the PLC 
Information on..  is available in ... 
What provisions do I have to make for PLC installation 
space? 
S7-300, CPU 31xC and CPU 31x Manual: Installation: 
Configuring - Component dimensions 
S7-300, CPU 31xC and CPU 31x Manual: Installation: 
Mounting - Installing the mounting rail 
How do environmental conditions influence the PLC?  S7-300, CPU 31xC and CPU 31x Manual: Installation: 
Appendix 
 
Table 1-2  Galvanic isolation 
Information on..  is available in ... 
Which modules can I use if electrical isolation is required 
between sensors/actuators? 
S7-300, CPU 31xC and CPU 31x Operating Instructions: 
Installation: Configuring – Electrical assembly, protective 
measures and grounding 
Module data Manual 
Under what conditions do I have to isolate the modules 
electrically? 
How do I wire it? 
S7-300, CPU 31xC and CPU 31x operating instructions: 
Installation: Configuring – Electrical assembly, protective 
measures and grounding 
CPU 31xC and CPU 31x operating instructions: Installation: 
Wiring 
Under which conditions do I have to isolate stations 
electrically? 
How do I wire it? 
S7-300, CPU 31xC and CPU 31x operating instructions: 
Installation – Configuring – Configuring subnets