Chapter 10  Operating Principle of the  
CPU Module
 
 
Table of Contents 
10.1  Operation of the CPU Module ....................................................................... 10-2 
10.1.1  Procedure ............................................................................................. 10-2 
10.1.2  I/O Refreshing and Communication Service .......................................... 10-3 
10.2  Operating Modes of the CPU Module ........................................................... 10-3 
10.2.1  Operating Modes ................................................................................... 10-3 
10.2.2  Statuses and Operation under Different Operating Modes..................... 10-3