Rockwell Automation 1715-OF8I Redundant I/O System User Manual User Manual

Page 232

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232

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Chapter 7

Using SIL 2 Add-On Instructions with 1715 Redundant I/O Modules

2. Set the priority to 1.
3. Set the Task Watchdog based on the following.

a. How long it takes to run the SIL 2 code (see AOI Scan Times on page

240

).

a. How small the task watchdog needs to be to ensure that safety reaction

times are met (see Safety Reaction Time Calculations on page

240

).

If you do not have the information required to fill in the watchdog time, leave the

default of 500 ms and adjust it later when you have more information.

4. Click OK.
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.

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