2711-B5A15 Allen-Bradley

2711-B5A15  Allen-Bradley   Ethernet Switch

A 1756 GuardLogix® controller is a ControlLogix controller that also provides the ability to perform safety functions. You must use a primary 

safety controller and a safety partner to achieve up to SIL CL 3/PLe/Cat. 4. A major benefit of this system is that it is still one project, safety 

and standard together. The safety partner is a part of the system, is automatically configured, and requires no user setup.

With the introduction of the GuardLogix 5580 controller, users can achieve up to SIL 2/PLd (Category 3) with a single controller and the use of 

the safety task and safety I/O.

During development, safety and standard have the same rules. Multiple programmers, online editing, and forcing are allowed. Once the safety 

system is validated and the safety signature applied, safety memory is protected, the safety logic cannot be modified, and all safety 

functions operate with SIL integrity. If the safety partner is present, the safety integrity will be SIL 3. If no safety partner is present, the 

safety integrity will be SIL 2.

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