42 Rockwell Automation Publication 1734-UM013N-EN-P - September 2017
Chapter 2 Safety Inputs, Safety Outputs and Safety Data
Dual-channel Mode
When the data of both channels is in the on state, and neither channel has a fault,
the outputs are turned on. The status is normal. If a fault is detected on one
channel, the safety output data and individual safety output status turn off for
both channels.
Figure 19 - Dual-channel Setting (Not to Scale)
ON
OFF
OUT0
Safety Output
0, 1
Status
OUT0
OUT1
OUT1
Safety Output
0, 1
Status
Fault Detection
Error
Detected
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Normal Operation
Safety
I/O
Network
Data Sent
to the
Controller
Safety
I/O
Network
Data Sent
to the
Controller
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