Rockwell Automation 1715-OF8I Redundant I/O System User Manual User Manual
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Rockwell Automation Publication 1715-UM001C-EN-P - March 2014
Chapter 7
Using SIL 2 Add-On Instructions with 1715 Redundant I/O Modules
When using input tags, that is, data from a 1715 input module to a ControlLogix
controller, the 1715 module that produces the input tag generates additional
check data as part of the tag. It is the responsibility of the ControlLogix
application to use appropriate Add-On Instructions to validate the received data.
The behavior of the Add-On Instructions in processing input data is as follows.
TIP
A SIL 2 reset of output modules can be performed only by clicking Reset on the
SIL 2 Safety tab of the Module Properties dialog box, or a LO to HI transition of
the reset tag in the 1715 SIL 2 Add-On Instructions.
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