History of Changes

This appendix contains the new or updated information for each revision of this publication. These lists include substantive updates only and are not intended to reflect all changes. Translated versions are not always available for each revision.
1756-RM012I-EN-P, March 2025
Change
Added information about choosing an automatic configuration setting
Added security certification information to Commissioning Lifecycle section
Added important information to Download the Safety Application Program section
Added Restricted Access to Safety Lock/Unlock section
Revised the
GuardLogix®
 system checklist
1756-RM012H-EN-P, November 2023
Change
Added catalog numbers 1756-L81ESXT, 1756-L82ESXT, 1756-L83ESXT, 1756-L84ESXT, and 1756-L8SPXT
Added security certification information to Commissioning Lifecycle section
Corrected maximum application rating for Safety Add-On Instructions
Updated temperature in the footnote of the Safety Parameters table to reflect
GuardLogix-XT™
 range
1756-RM012G-EN-P, November 2023
Change
Added new chapter about the safety signature: Chapter 2, Safety Signature
Added catalog number 1756-L85ES
Updated text and screen shot for I/O replacement options
Added new section, Safety Signatures Elements, to Chapter 6
Added Safety Signature Report to safety revalidation considerations
Added requirement to initialize safety critical AOI tag values in AOI prescan logic
Updated safety instructions throughout Appendix A
Added information about the safety signature element for AOIs
1756-RM012F-EN-P, November 2022
Change
Added
GuardLogix-XT™
 catalog numbers
Revised
Compact GuardLogix®
 5380 SIL 3 Controllers section in Chapter 2
Moved Use of Human Interfaces section from Chapter 5 to Chapter 2
Added SIL 2 and SIL 3 Considerations for Safety I/O Modules section to Chapter 3
Moved Differentiate Between Standard and Safety section from Chapter 5 to 1756-UM543
Added Safety Programs, Safety Routines, and Safety Tags sections to Chapter 5
Added safety mapped tags
Revised safety signature content
Revised Generate the Safety Signature section in Chapter 6
Revised Lock the Controller section in Chapter 6
Added Safety Programming Considerations chapter
Added First Scan Safety Tag Initialization section to Chapter 7
Added Develop a Fault Routine section to Chapter 8
Moved safety fault codes from Chapter 8 to 1756-RD001
Added Use GSV/SSV Instructions in a Safety Application section to Chapter 8
Added ATAN2 safety instruction
Added information about connection reaction time limit
Added checklist item for
GuardLogix®
 system
1756-RM012E-EN-P, March 2022
Change
Restructured and updated the Additional Resources table
Updated
GuardLogix®
 5580 controllers and safety partner in chassis illustration
Added content about on-delay and off-delay functions for input signals
Added content about the safety I/O configuration signature
Added content about electronic keying implications for safety I/O device replacement
Added new section about point operation types
Added new section about safety I/O configuration variations
Added considerations for assigning safety network numbers (SNNs)
Added content about tag mapping
Added content to safety application status table
Added new section about revalidation considerations for the commissioning lifecycle
Revised content about inhibiting a device
1756-RM012D-EN-P, August 2020
Change
Clarified safety signature information
Added safety signature ID definition
1756-RM012C-EN-P, May 2020
Change
Added
Compact GuardLogix®
 5380 SIL 3 controllers information
Updated text in the Differentiate Between Standard and Safety section
Updated text in the SIL 2 and SIL 3 Safety Application Differences section
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