230 Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Chapter 8 Using SIL 2 Add-On Instructions with 1715 Redundant I/O Modules
5. Right-click on the newly created task and choose New Program.
6. Type a name for the program.
7. Verify that it is scheduled in the SIL 2 task.
8. Right-click the newly created program and choose New Routine.
9. Name the routine.
10. Select the appropriate Type.
Ladder or Function Block is recommended for SIL 2 safety functions.
11. Click OK.
Configure an Input Module
Add-On Instruction
Use the following instructions to configure an input module.
Follow these steps to configure an input module Add-On Instruction.
1. From the Instruction toolbar Add-On tab, add the Add-On instruction to
your routine.
2. Create a tag for the Add-On Instruction by using the default data type
and Read/Write External Access.
The tag can be controller- or program-scoped.
IMPORTANT
Create as many SIL 2 programs and routines as required for the SIL
2 logic, keeping in mind the goal is to have logic that is the
following:
• Easy to understand
• Easy to trace
• Easy to change
• Easy to test
• Well-documented
IMPORTANT
The 1715-AENTR adapter functions as an input module when using
1715 SIL 2 Add-On Instructions.
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