1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com
1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com
1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com
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Chapter 4<strong>ControlLogix</strong> ControllerThis chapter discusses the <strong>ControlLogix</strong> controller as used <strong>in</strong> a<strong>SIL2</strong>-certified system.Introduction to theControllerThe <strong>ControlLogix</strong> controller (catalog number <strong>1756</strong>-L55M16) used <strong>in</strong> a<strong>SIL2</strong>-certified <strong>ControlLogix</strong> system is a solid-state control system with auser-programmable memory for storage of data to implement specificfunctions, such as:• I/O control• Logic• Tim<strong>in</strong>g• Count<strong>in</strong>g• Report generation• Communications• Arithmetic• Data file manipulationThe controller consists of a central processor, I/O <strong>in</strong>terface andmemory.The controller performs power-up and run-time functional tests. Thetests are used with user-supplied application programs to verifyproper controller operation.1 Publication <strong>1756</strong>-<strong>RM001B</strong>-<strong>EN</strong>-P - October 2003
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