F3 AIO 8/4 01  5 Operation 
HI 800 161 E Rev. 1.01  Page 43 of 54 
5 Operation 
The remote I/O can only operate together with a controller. No specific monitoring is 
required for remote I/Os. 
5.1 Handling 
Handling of the remote I/O during operation is not required. 
5.2 Diagnosis 
A first diagnosis results from evaluating the LEDs, see Chapter 3.5.1. 
The device's diagnostic history can also be read using the programming tool.