This address must be the same as the one which will be configured in the configuration screen of the programming software. This configuration is carried out using micro-switches found on the processor card.         
Rack address: the processor’s virtual slot is always situated on the rack with address 0.         
Processor position: the virtual position of the processor will depend upon the type of power supply installed on the rack:         
- 
single format power supply: virtual position of processor = 00,         
 
- 
double format power supply: virtual position of processor = 01.         
 
Default configuration:         
- 
rack address = 0,         
 
- 
module position = 00.         
 
         
         
Explanatory diagram: