GuardLogix Safety Controllers

Bulletin 1756 GuardLogix® Safety Controllers have a two-processor architecture  slcpowersupply(1oo2) and are suitable for SIL 3 PLe applications. As part of the Rockwell Automation® Integrated Architecture™ system, these controllers use RSLogix™ 5000 programming software, offer common information capabilities, and support CIP Safety over EtherNet/IP™ and ControlNet™ networks. These high-performance controllers provide a common control engine with a common development environment for all control disciplines. Consider these controllers for more sophisticated machines and for connectivity to business systems.



  • Provide twice the processing speed in the L7 models when compared to the L6 models
  • Provide safety and integrated motion in the same chassis
  • Offer TÜV certification for SIL 3 functional safety (controller and safety partner required)
  • Support Integrated Motion on EtherNet/IP™, integrated Sercos™ motion, and analog motion
  • Support safety communications via EtherNet/IP, ControlNet, and DeviceNet™ networks
  • Require no setup for automatically-configured safety partner
  • Support removal and insertion under power (RIUP)
  • Support multiple controllers in the same chassis, with each one operating independently
  • Let you program using relay ladder logic, structured text, function block, and SFC languages
  • Offer flexible user memory options


  • 1756 GuardLogix® L7 & L6 Safety Controllers

GuardLogix Safety Controller Comparison

FeatureL7 ModelsL6 Models
Performance Capability Twice the performance of L6 models High
Max. Controller Connections 500 250
Built-in Port USB Serial
Energy Storage Module (ESM) Included Yes No
Battery Required No Yes
On-board Display Included Yes No
Supported in Studio 5000™ Environment Yes No
Non-volatile Memory SecureDisc card CompactFlash card
Max. User Memory 8 MB 8 MB
Max. I/O Points 128,000 digital; 4,000 analog 128,000 digital; 4,000 analog
I/O Module Integration ControlLogix® I/O, CompactBlock™ Guard™ I/O, ArmorBlock® Guard I/O, POINT Guard I/O ControlLogix® I/O, CompactBlock™ Guard™ I/O, ArmorBlock® Guard I/O, POINT Guard I/O


  • GuardLogix Safety Controllers, L7 models: c-UL-us, CE, C-Tick, ATEX, KC, FM, TÜV
  • GuardLogix Safety Controllers, L6 models: c-UL-us, CSA, CE, C-Tick, ATEX, KC, FM, TÜV



We offer a variety of accessories for your GuardLogix® Safety Controllers, including:

  • Energy Storage Modules (ESMs)
  • Memory cards
  • Replacement batteries


Frequently Viewed Publications

Safety Capabilities Brochure SAFETY-BR011
Integrated Architecture Brochure IA-BR005
GuardLogix Product Profile 1756-PP009
ControlLogix Selection Guide 1756-SG001
ControlLogix Controllers Specifications Technical Data 1756-TD001
GuardLogix Controllers User Manual 1756-UM020
ControlLogix System User Manual 1756-UM001
GuardLogix Controller Systems Safety Reference Manual 1756-RM093
GuardLogix Safety Application Instruction Set Reference Manual 1756-RM095
Logix5000 Controllers Design Considerations Reference Manual 1756-RM094
Logix5000 Controllers Common Procedures Programming Manual 1756-PM001


Automation consultancy

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