Rockwell Automation 1732DS-IB8 User Manual page 59

Follow this procedure to complete entries from the Input
Configuration Dialog that you see when, from the top of the Module
Properties dialog, you click Input Configuration.
1. For Point Operation, for Type, select one of these and a value
for Discrepancy Time if set to Equivalent or Complementary:
Single
Inputs are treated as single channels. Note that in many cases,
dual-channel safety inputs are configured as two individual
single channels. This does not affect pulse testing because it
is handled on an individual channel basis.
(1)
Equivalent
Inputs are treated as a dual-channel pair. The channels must
match within the discrepancy time or an error is generated.
Complementary
Inputs are treated as a dual-channel pair. They must be in
opposite states within the discrepancy time or an error is
generated.
(1)
Be aware that configuring discrepancy time on safety I/O modules masks input inconsistent faults from the
safety controller.
Configure Modules in RSLogix 5000 Software
(1)
Publication 1791DS-UM001H-EN-P - April 2009
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