Rockwell Automation 1732DS-IB8 User Manual page 29

Dual-channels, Complementary
The status is treated as normal (OK) when one channel is on and the
other channel is off. When both channels are on or both channels are
off, it is treated as a fault (alarm). In the fault (alarm) state, safety
input 0 is off and safety input 1 is on, and the safety input status turns
off for both inputs.
Normal Operation and Fault Detection
Normal Operation
ON
IN0
OFF
ON
IN1
OFF
ON
Safety Input 0
OFF
ON
Remote
Safety Input 1
I/O
OFF
Data
ON
Safety Input
Status 0, 1
OFF
Fault Detection
ON
IN0
OFF
ON
IN1
OFF
ON
Safety Input 0
OFF
ON
Remote
Safety Input 1
I/O
OFF
Data
ON
Safety Input
Status 0, 1
OFF
Understand the Operation of Safety Functions
Discrepancy Time
Time
Discrepancy Time
Fault Detected
Publication 1791DS-UM001H-EN-P - April 2009
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