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122 Rockwell Automation Publication 1756-RM001I-EN-P - May 2012
Appendix D Checklists
Checklist for SIL Inputs The following checklist is required for planning, programming and start up of
SIL inputs. It may be used as a planning guide as well as during proof testing. If
used as a planning guide, the checklist can be saved as a record of the plan.
For programming or start-up, an individual checklist can be filled in for every
single SIL input channel in a system. This is the only way to make sure that the
requirements were fully and clearly implemented. This checklist can also be used
as documentation on the connection of external wiring to the application
program.
Input Module Check List for ControlLogix System
Company:
Site:
Loop definition:
SIL input channels in the:
No. All Input Module Requirements (apply to both digital and analog input modules) Yes No Comment
1 Is Exact Match selected as the electronic keying option whenever possible?
2 Is the RPI value set to an appropriate value for your application?
3 Are all modules owned by the same controller?
4 Have you performed proof tests on the system and modules?
5 Have you set up the fault routines?
6 Are control, diagnostics and alarming functions performed in sequence in application logic?
7 For applications using FLEX I/O modules, is the application logic monitoring one ControlNet status bit for the associated
module, and is appropriate action invoked via the application logic by these bits?
No. Additional Digital Input Module-Only Requirements Yes No Comment
1 When two digital input modules are wired in the same application, do the following conditions exist:
• Both modules are owned by the same controller.
• Sensors are wired to separate input points.
• The operational state is ON.
• The non-operational state is. OFF.
• Configuration parameters (for example, RPI, filter values) are identical.
• For FLEX input modules, both module are on different ControlNet nodes
2 For the standard input modules, is the Communication Format set to one of the Input Data choices?
3 For the diagnostic input modules, is the Communication Format set to Full Diagnostics-Input Data?
4 For the diagnostic input modules, are all diagnostics enabled on the module?
5 For the diagnostic input modules, are enabled diagnostic bits monitored by fault routines?
6 For the diagnostic input modules, is the connection to remote modules a direct connection?