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124 Rockwell Automation Publication 1756-RM001I-EN-P - May 2012
Appendix D Checklists
Checklist for SIL Outputs The following checklist is required for planning, programming and start up of
SIL outputs. 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 requirement checklist must be filled
in for every single SIL output channel in a system. This is the only way to make
sure that the requirements are fully and clearly implemented. This checklist can
also be used as documentation on the connection of external wiring to the
application program.
Output Check List for ControlLogix System
Company:
Site:
Loop definition:
SIL output channels in the:
No. All Output Module Requirements
(apply to both digital and analog output modules) Yes No Comment:
1 Have you performed proof tests on the modules?
2 Is Exact Match selected as the electronic keying option whenever possible?
3 Is the RPI value set to an appropriate value for your application?
4 Have you set up fault routines, including comparing output data with a corresponding input point?
5 If required, have you used external relays in your application to disconnect module power if a short or other
fault is detected on the module or isolated output in series?
6 Is the control of the external relay implemented in ladder logic?
7 Have you examined the Output Data Echo signal in application logic?
8 Are all outputs configured to deenergize in the event of a fault or the controller entering program?
9 Do two modules of the same type, used in the same application, use identical configurations?
10 Does one controller own both modules if two of the same type are used in an application?
11 Are control, diagnostics and alarming functions performed in sequence in application logic?
No. Digital Output Module-Only Requirements Yes No Comment
1 For the standard output modules, is the Communication Format set to Output Data?
2 For standard output modules, have you wired the outputs to a corresponding input to validate that the output
is following its commanded state?
3 For the diagnostic output modules, are all diagnostics enabled on the module?
4 For the diagnostic output modules, are enabled diagnostic bits monitored by fault routines?
5 For the diagnostic output modules, is the Communication Format set to Full Diagnostics-Output Data?
6 For diagnostic output modules, have you periodically performed a Pulse Test to make sure that the output is
capable of change state?
7 For diagnostic output modules, is the connection to remote modules a direct connection?