1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com
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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

tuv.fs.com
11.07.2015 Views

8-4 General Requirements for Application SoftwareForcingForcing must be disabled after system test and validation.SecurityThe user must define what measures are to be applied for theprotection against manipulation.In the ControlLogix system and in RSLogix 5000, protectionmechanisms are available that prevent unintentional or unauthorizedmodifications to the safety system:• The following tools may be employed for security reasons in aSIL2-certified ControlLogix application:– Logix CPU Security Tool– Source Protection Tool– RSI Security ServerEach of these tools offers different security features, includingpassword protection, at varying levels of granularity throughoutthe application. The description of these tools is too large inscope to list here. Users can contact their local RockwellAutomation representative for more information.• The controller keyswitch should be in the RUN position and thekey removed during normal operating conditions.• Operator options are set up per user login in the ControlLogixsystem.• The link between RSLogix 5000 and the ControlLogix system isnot permitted during normal SIL2 RUN operation.The requirements of the safety and application standards regardingthe protection against manipulations must be observed. Theauthorization of employees and the necessary protection measures arethe responsibility of the individuals starting the system.Publication 1756-RM001B-EN-P - October 2003

General Requirements for Application Software 8-5ControlLogix SystemOperational ModesA three-position keyswitch on the front of the controller governsControlLogix system operational modes. The following modes areavailable:• Run• Program• Remote - This software-enabled mode can be program or run.Figure 8.1 shows a controller with the keyswitch in the Run mode.Figure 8.142525When a SIL2-certified ControlLogix application is operating in the Runmode, the controller keyswitch must be in the RUN position and thekey removed. Outputs are only enabled in this mode.Publication 1756-RM001B-EN-P - October 2003

General Requirements for Application Software 8-5<strong>ControlLogix</strong> SystemOperational ModesA three-position keyswitch on the front of the controller governs<strong>ControlLogix</strong> system operational modes. The follow<strong>in</strong>g modes areavailable:• Run• Program• Remote - This software-enabled mode can be program or run.Figure 8.1 shows a controller with the keyswitch <strong>in</strong> the Run mode.Figure 8.142525When a <strong>SIL2</strong>-certified <strong>ControlLogix</strong> application is operat<strong>in</strong>g <strong>in</strong> the Runmode, the controller keyswitch must be <strong>in</strong> the RUN position and thekey removed. Outputs are only enabled <strong>in</strong> this mode.Publication <strong>1756</strong>-<strong>RM001B</strong>-<strong>EN</strong>-P - October 2003

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