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Last Update September 2025
Logix SIS
Important User Information
Preface
Summary of Changes
Summary of Changes
Additional Resources
Additional Resources
Logix SIS Safety Concept
SIL Requirements
SIL Requirements
Safety Application Requirements
Safety Application Requirements
Logix SIS Safety Data
Logix SIS Safety Data
Logix SIS Architecture
Safety Functions of Logix SIS Components
Safety Functions of Logix SIS Components
Safety Task Execution
Safety Task Execution
Safety Function Muting
Safety Function Muting
Concurrent Communication in Logix SIS
Concurrent Communication in Logix SIS
Safety Signature
Safety Signature Hierarchy
Safety Signature Hierarchy
View Safety Signature Elements
View Safety Signature Elements
Safety Signature States
Safety Signature States
Archive Safety Signature Reports for Audit
Archive Safety Signature Reports for Audit
Signature Authentication
Signature Authentication
Settings that Do Not Affect the Safety Signature
Settings that Do Not Affect the Safety Signature
Programmatic Changes to the Safety Application Signature
Programmatic Changes to the Safety Application Signature
Safety Signature Validation in Logix SIS
Safety Signature Validation in Logix SIS
Safety I/O
SIL 2 and SIL 3 Considerations
SIL 2 and SIL 3 Considerations
Input Operation
Input Operation
Output Operation
Output Operation
Recommended Safety I/O Settings
Recommended Safety I/O Settings
Safety I/O Configuration Signature
Safety I/O Configuration Signature
Safety I/O Device Replacement
Safety I/O Device Replacement
CIP Safety Systems and Safety Network Numbers
Safety Network Numbers (SNNs)
Safety Network Numbers (SNNs)
How SNNs Get to Safety Devices
How SNNs Get to Safety Devices
SNN Formats
SNN Formats
Safety Programming Considerations
Safety Task
Safety Task
Safety Programs
Safety Programs
Safety Routines
Safety Routines
Safety Tags
Safety Tags
Safety Signature Elements
Safety Signature Elements
Standard Tags in Safety Routines (Tag Mapping)
Standard Tags in Safety Routines (Tag Mapping)
Create Tag Mapping Pairs
Create Tag Mapping Pairs
Custom Tag Initialization During Prescan
Custom Tag Initialization During Prescan
Safety Add-On Instructions
Generate the Instruction Signature
Generate the Instruction Signature
Safety Add-On Instruction Qualification Tests
Safety Add-On Instruction Qualification Tests
Create Signature History Entry
Create Signature History Entry
Export and Import the Safety Add-On Instruction
Export and Import the Safety Add-On Instruction
Qualification and Verification
Qualification and Verification
Safety Applications
Application Development and Testing
Application Development and Testing
Commissioning Lifecycle
Commissioning Lifecycle
Download/Upload a Safety Application Program
Download/Upload a Safety Application Program
Store and Load a Project from a Memory Card
Store and Load a Project from a Memory Card
Force Data
Force Data
Inhibit a Device
Inhibit a Device
Edit a Safety Application
Edit a Safety Application
Monitor Safety Status and Handle Faults
Redundancy Status
Redundancy Status
System Status
System Status
Safety Status
Safety Status
Logix SIS Safety Faults
Logix SIS Safety Faults
Fault Routine for Safety Applications
Fault Routine for Safety Applications
GSV/SSV Instructions in a Safety Application
GSV/SSV Instructions in a Safety Application
Safety Application Instructions
Safety Instructions
Safety Instructions
Metal Form Instructions
Metal Form Instructions
Ladder Diagram Safety Instructions
Ladder Diagram Safety Instructions
Safety Reaction Times
Connection Reaction Time Limit
Connection Reaction Time Limit
System Reaction Time
System Reaction Time
Logix System Reaction Time
Logix System Reaction Time
Factors That Affect Logix Reaction-time Components
Factors That Affect Logix Reaction-time Components
Configure the Safety Input Module Delay Time
Configure the Safety Input Module Delay Time
Configure the Input and Output Safety Connection Reaction Time Limits
Configure the Input and Output Safety Connection Reaction Time Limits
Configure the Safety Task Period and Watchdog
Configure the Safety Task Period and Watchdog
Checklists for Logix SIS Applications
Checklist for the Controller System
Checklist for the Controller System
Checklist for Safety Inputs
Checklist for Safety Inputs
Checklist for Safety Outputs
Checklist for Safety Outputs
Checklist to Develop a Safety Application Program
Checklist to Develop a Safety Application Program
Trademarks