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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/isNullTests to see whether or not the argument value is null
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/isGoodTests to see whether or not the given value is good quality.
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/isErrorTests to see whether or not the given value's quality is either error.
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/isBadOrErrorTests to see whether or not the given value's quality is either bad or error.
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/isUncertainTests to see whether or not the given value's quality is Uncertain.
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https://docs.inductiveautomation.com/docs/8.1/platform/alarmingAlarms are always configured on a Tag, excluding Vision client tags. Every time a Tag with a configured alarm receives an updated value, the configured alarm will examine the new value. If the new value on the Tag meets some criteria, as defined by the alarms mode settings, then the alarm generates a
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/binEncTakes a list of booleans and treats them like the bits in a binary number.
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https://docs.inductiveautomation.com/docs/7.9/appendix/expression-functions/logic/getBitThis function returns the bit value (an integer, 0 or 1) in the number at position position, according to its binary representation.
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/hasChangedThis function returns true if the given value has changed since the last time the Expression Item was run.
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https://docs.inductiveautomation.com/docs/8.1/appendix/expression-functions/logic/coalesceThis function, which accepts any number of arguments, evaluates each in order, and returns the first non-null argument.
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