22
Understand the Operation of Safety Functions
Publication 1791DS-UM001H-EN-P - April 2009
If an error is detected, safety input data and safety input status turn
off.
Normal Operation and Fault Detection
Normal Operation
TO
Exte rnal Device
Input Terminal 0
Safety Input 0
Remote I/O
Data
Safety Input
Status 0
Fault Detection
TO
External Device
Input Terminal 0
Safety Input 0
Remote I/O
Data
Safety Input
Status 0
24V
0V
ON
OFF
ON
OFF
ON
OFF
ON
OFF
24V
0V
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Fault
Detected