Rockwell Automation 1791ES-IB16 Guard I/O EtherNet/IP Safety Modules - Manual (Page 61)

Rockwell Automation Publication 1791ES-UM001D-EN-P - May 2013 61
Configure the I/O Modules by Using the Logix Designer Application Chapter 5
Follow this procedure to complete entries from the Input Configuration dialog
box that you see when, from the top of the Module Properties dialog box, choose
Input Configuration.
1. For Point Operation Type, choose one of these values 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.
• Equivalent
(1)
Inputs are treated as a dual-channel pair. The channels must match
within the discrepancy time or an error is generated.
• Complementary
(1)
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 GuardLogix safety
instructions. Status can be read by GuardLogix to obtain this fault information.