Configuring   
4.7 Selection and installation of cabinets 
  S7-300, CPU 31xC and CPU 31x: Installation 
4-12  Operating Instructions, Edition 08/2004, A5E00105492-05 
 
 
 
Warning 
Modules may get damaged if exposed to excess ambient temperatures. 
 
Reference for ambient temperatures 
For information on permitted ambient temperatures, refer to the 
S7-300 Automation System, 
Module data
 Reference Manual.