FUNCTION_BLOCK SCDModeAMLock

An instance of this function block type encapsulates the Lock/Unlock logic for the Auto/Manual mode state machine implemented in the SCDModeAM function block type. It can be used in a "stand-alone" fashion, or may be encapsulated in a composite function block type such as SCDModeAM2.
The logic encapsulated in this function block type attempts to provide an unambiguous implementation of the provisions of Annex F.3.2 of the NORSOK I-005 Standard for System Control Diagrams. Logic encapsulated in this fashion is easily maintainable in case of future corrections or clarifications in the NORSOK Standard.

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Last updated: 2013-03-31.
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