Rockwell Automation 1791ES-IB16 Guard I/O EtherNet/IP Safety Modules - Manual (Page 21)

Rockwell Automation Publication 1791ES-UM001D-EN-P - May 2013 21
Understand the Operation of Safety Functions Chapter 2
If an error is detected, safety input data and safety input status turns off.
Figure 7 - Normal Operation and Fault Detection (not to scale)
24V
0V
T0
Input Terminal 0
External Device
Fault Detected
Remote
I/O
Data
ON
OFF
ON
OFF
ON
OFF
ON
OFF
24V
0V
ON
OFF
T0
Safety Input
Status 0
Fault Detection
Remote
I/O
Data
ON
OFF
ON
OFF
ON
OFF
Safety Input
Status 0
Safety Input 0
Safety Input 0
Input Terminal 0
Normal Operation
External Device