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| − | <h1>Rule Machine<sup>®</sup> 4.0</h1>
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| − | Rule-4.0 is the culmination of a journey in the transformation of the Rule Machine<sup>®</sup> app. All at once, it simplifies and adds power, resulting in a fully generalized automation engine. The prior top-level organization of Rule Machine has been replaced with an optimized interface. The changes described below, explain how prior rules were created versus how it is accomplished with Rule-4.0. The former structure of Rules, Triggers, Triggered Rules, Actions and Schedules are now replaced with the definition of what causes a rule to run, and the resulting action. The former Button Controller app is now incorporated into Rule Machine, but with increased power and flexibility. New conditional logic capabilities are provided, allowing the most subtle or complex automations to be created. You simply define what causes the a rule to run, and then that you want it to do.
| + | <big>'''We're moving!''' Please visit http://docs2.hubitat.com for the latest documentation.</big> |
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| − | === '''What Became of Rule, Trigger, Triggered Rule, Action and Schedule?''' ===
| + | <big> |
| − | To explain the former Rule Machine 3.0 and earlier concepts of Rule, Trigger, Triggered Rule, Actions and Schedule versus how rule automation is now accomplished, as well as how Button Controller is now incorporated, we need to first address the primary differences.
| + | This document is available at: http://docs2.hubitat.com/en/apps/rule-machine/rule-5-0 |
| − | | + | </big> |
| − | # What was a '''Trigger''' is now the basic format for all rules.
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| − | #* The user selects '''Trigger Events''' and define actions.
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| − | # Formerly, an '''Action''' always required a Trigger Event, but it is now possible to omit a Trigger Events and only define actions. However, such a rule '''must''' to be run by some other rule or from the Rule Machine API.
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| − | # The previous Schedule event, is now available as a new type of Trigger Event named '''Days of Week Schedule'''.
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| − | # The previous '''Button Controller''' app is fully incorporated as a new type of Trigger Event named '''Button Device'''. Once a Button Device is selected, the same user interface of the former Button Controller 3.0 is presented to define actions for any of the buttons available on the selected device. However, unlike the previous Button Controller app, these actions have full access to conditional logic and global variables.
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| − | === '''Change in logic for Rule-4.0''' rule ===
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| − | In any Rule, the rule itself can be thought of as an overarching '''IF-THEN-ELSE''', where if the condition was '''True''' for the '''IF''' part or the rule, then '''Actions for True''' are run, and if they are '''False''', then '''Actions for False''' are run. In '''Rule-4.0''', this same logic can now simply be done with the '''Conditional Actions''' of '''IF-THEN and ELSE''' in the '''Actions''' section of a rule. As described in the next section, '''IF-THEN''' now has the same full logical expression capability previously available, with the addition of '''AND, OR, XOR, NOT''' logical operators, and nested parenthetical sub-expressions.
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| − | * '''Example:''' Using a Trigger Event such as a contact sensor '''Front Door *changed*''' to illustrate the difference, the previous Rule Machine version used this to interpret the '''Condition of Front Door *open*.''' The rule was evaluated whenever '''any''' event happened for the Front Door. In Rule-4.0, this is explicit, whereas in previous versions the rule was '''Front Door *open*''', we now make that event the Condition of an '''IF-THEN''' action. What were formerly '''Actions for True''', now become the Actions following '''IF-THEN''', and the former '''Actions for False''' become the actions following '''ELSE'''. Most Rules will now follow this basic format.
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| − | === '''Former Rule Truth and Cancel on Truth Change''' ===
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| − | There are two subtle differences of Rule-3.0 that have now changed in Rule-4.0. The concept of a Rule Truth is gone in Rule 4.0 and is instead now explicit in the way you write the '''Actions''' for a rule. If you don't want the Actions of a Rule-4.0 rule to run unless there has been a change, which previously would have been the same as a change in Rule Truth of a 3.0 Rule, you can do that explicitly using a Private Boolean.
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| − | For example, If a motion sensor becomes active, a Private Boolean can be also set to '''False''', with a delay before returning to '''True'''. The can be built so the lights will not be turned on again until the full delay timer has run its course and the lights have been turned off. When that happens, Private Boolean is set to '''True''', and the whole cycle can repeat.
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| − | === '''What about Triggered Rules?''' ===
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| − | All "Rules" in Rule-4.0 are in effect '''Triggered Rules'''. They each have a '''Trigger Event''', and then '''Conditional Actions'''. Instead of a rule with '''Actions for True''' and '''Actions for False''', they simply use conditional logic in the actions to create an equivalent '''IF-THEN-ELSE''' structure.
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| − | ===Events===
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| − | Each rule has one or more '''Trigger Events''' that when triggered, cause the rule's actions to run.
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| − | <p>Events are created by the devices or conditions in your system. Each device creates events appropriate to the type of device. A '''Trigger Event''' listens for specific events and when a trigger receives a selected event, it causes the defined '''Actions''' to run.</p>
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| − | <p>Rule Machine allows the following events in a Hubitat Elevation<sup>®</sup> system to be acted upon. Each event results in a single test and the supported events and states that can be tested are listed below. For each event that refers to a device, one or more devices can be selected, and then the device state required for the '''Condition''' to be met can be selected. When multiple devices are selected, the Condition/Event may apply for '''ANY''' (default) or '''ALL''' of the devices.</p>
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| − | <pre>Acceleration: active / inactive
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| − | Battery: value
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| − | Button: pressed / held / doubleTapped / released
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| − | Button Device: select actions for any buttons of a button device
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| − | Certain Time: at a certain time, including sunrise / sunset with offset
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| − | Cloud End Point: hitting URL fires
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| − | Contact: open / closed
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| − | Days of Week Schedule: at certain time on certain days of the week
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| − | Dimmer level: value
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| − | Door: open, closed, opening, closing, unknown
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| − | Energy meter: value
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| − | Garage door: open, closed, opening, closing, unknown
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| − | HSM alert: intrusion, intrusion-delay, intrusion-home, intrusion-home-delay, intrusion-night, cancelRuleAlerts, intrusion-night-delay,
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| − | smoke, water, rule, arming, armingHome, armingNight, cancel
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| − | HSM status: armed away, armed home, armed night, delayed arming home, delayed arming night, delayed arming away, disarmed, all disarmed
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| − | Humidity: value
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| − | Illuminance: value
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| − | Local End Point: hitting URL fires
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| − | Lock: locked / unlocked
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| − | Mode: any of your hub's modes
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| − | Motion: active / inactive
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| − | Music player: playing, paused, stopped
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| − | Periodic: allows periodic schedules for minutes, hourly, daily, weekly, monthly or yearly
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| − | Physical dimmer level: value
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| − | Physical switch: on / off
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| − | Power meter: value
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| − | Power source: mains / battery
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| − | Presence: present / not present or arrives / leaves
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| − | Private Boolean: true / false
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| − | Rule truth: true / false
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| − | Smoke detector: clear, detected, tested
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| − | Switch: on / off
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| − | Temperature: value
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| − | Thermostat mode: heat / cool / auto / off / emergency heat
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| − | Thermostat state: heating / cooling / fan only / idle / pending heat / pending cool
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| − | Variable: value
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| − | Water sensor: dry / wet
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| − | Note: value means compare current value to a number, to another device with an offset, or to a variable with an offset, or changed, increased, decreased</pre>
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| − | ===Actions===
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| − | Actions are the portion of a rule that defines what the rule does when it is triggered to run.
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| − | ==== '''Actions as ordered script''' ====
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| − | As you define actions, you are creating a script of actions to perform when the rule runs. Instead of only being able to have a single action for turning on switches as in the former Rule Machine<sup>®</sup> versions, you can now have as many actions as you want for each '''Action''' type and they can be run in whatever order you want. There is no predefined order of execution for Rule Machine<sup>®</sup> actions, so you may arrange the order of actions any way you want. You can insert a new action anywhere in the list of actions, or at the end of the list.
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| − | ==== '''Actions can be edited''' ====
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| − | The Rule-4.0 user interface provides the ability to '''Edit''' or '''Delete''' any action you have defined, giving you complete control over your list of actions.
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| − | '''Delay per action and Delay (Pause) all actions'''
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| − | There are three types of delays included in Rule 3.0:
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| − | 1. Each individual action can have its own delay, which for Rules may include a cancel-on-truth-change option.
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| − | 2. All actions can be delayed, effectively pausing the action execution for some amount of time.
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| − | 3. All actions can be delayed for a period of time that depends on the current mode (Delay Actions Per Mode).
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| − | These are further described below.
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| − | ''Delay per action''
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| − | Each action you define can have an optional delay. These delays can be defined with hours, minutes, and seconds. Seconds can have decimal fractions, allowing millisecond resolution. In a Rule, delays can have the option to be cancelled in the event of a change of rule truth. It is important to realize that the delay assigned to an individual action affects only that action, and not subsequent actions. Any subsequent action is executed immediately after the delayed action starts its delay timer -- it doesn't wait for that delay timer to run. When that delay timer expires, the delayed action is executed (unless the delay was cancelled).
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| − | ''Delay all actions''
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| − | It is also possible to delay all actions (also with optional cancel). The script of actions runs sequentially when the rule runs, with each action happening in order. Actions with delays start their timer, which can vary for each action, and the next action in order then runs. By using the Delay Actions action the entire script can be 'paused' by a delay. This feature can also be specified on a per mode basis, so that the time the script is paused varies according to the current mode.
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| − | As a consequence of these new features, some of the actions in Rule 2.5 have not been included in Rule 3.0. Specifically, those actions which incorporated a delay, or a delay with cancel, have not been included, since now every action can have such delays.
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| − | ==Conditional Actions and Logical Expressions==
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| − | In Rule 4.0 IF-THEN-ELSE-ENDIF conditional blocks can be nested. The UI uses textual indentation to help guide you in keeping track of which IF-THEN-ELSE-ENDIF block you are currently adding actions to. It falls on you to complete each level of nested IF-THEN blocks.
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| − | In Rule 4.0 the condition of an IF-THEN or ELSE-IF action can be a full logical expression built up from individual conditions, and logical operators AND, OR, XOR, and NOT. Parenthesized sub-expressions are also possible. This is the same user interface used to create the rule portion of a Rule or Triggered Rule for Rule 3.0. An individual condition can be created 'on the fly' while defining a logical expression. Every such condition is kept in the list of available conditions. This list of available conditions is available on the Define Actions page. It can be opened, and presents the familiar user interface for creating, editing and deleting conditions. If a condition is edited, those changes will be reflected where it is used in an IF-THEN or ELSE-IF conditional action.
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| − | This combination of nested IF-THEN blocks and full logical expression for each IF-THEN and ELSE-IF allows creativity for rules in Rule 4.0 that is limited only by your imagination. To help you with complex logic structures, one more new action is provided: Exit Rule. With Exit Rule the execution of actions for that rule stops, irrespective of where in the rule it is. Pending delays are not cancelled, and current repetitions are not stopped. These can be managed separately if so desired with Stop Repeating Actions, Stop Rule Actions, and Cancel Delayed Actions, as appropriate.
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| − | '''Automatic Condition Creation'''
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| − | When Event Triggers are defined, corresponding conditions are created for most types. Some, like button, Certain Time, etc, do not have state and so have no corresponding condition. These created conditions are available in the Define Actions page for use in Conditional actions. These can be edited. For example, in the rule above where Motion Changed was the trigger event, there is an IF-THEN for Motion Active as the first action. Instead of having to create that by hand, it is automatically created. One needs to edit it to modify from using Changed to using Active.
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| − | Every condition that you create in a Conditional action is available for use in other actions, and can be edited.
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| − | '''IF-THEN-ELSE'''
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| − | You can introduce conditional execution of actions using:
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| − | IF (condition) THEN
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| − | some actions...
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| − | ELSE-IF (condition) THEN
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| − | some actions...
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| − | ELSE
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| − | some actions...
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| − | END-IF
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| − | IF-THEN and ELSE-IF both accept a logical expression as described above. IF-THEN-ELSE can be nested. If the expression on the IF part is true, then those actions following the IF and before any ELSE-IF or ELSE statements are run. If the expression is false, then those actions are skipped, and the ELSE part or ELSE-IF part are run. In the case of ELSE-IF, its expression is tested, and the following actions run or not depending on the result. There can be as many ELSE-IF sections as you want, and both ELSE-IF and ELSE are optional. END-IF is also optional, and if omitted means all remaining actions are part of the preceding IF-THEN, ELSE-IF or ELSE. It is strongly recommended that you use END-IF as a regular practice.
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| − | ==Repeat Actions==
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| − | Portions, or all of, the script of actions can be repeated periodically. You must specify the time interval for the repetition. Be careful not to make this interval too short, as you can consume your hub CPU by repeating too quickly. You can select a number of iterations if desired. Otherwise, another method will be needed to stop the repetition. When a Repeat Actions is introduced to the script, following actions up to END-REP will be repeated. Only the Actions between Repeat Actions and END-REP are repeated. Actions after END-REP will run once the repetition stops. It is optional to select Stop for a Repeat Action. If selected, then the Stop Repeating Actions action will stop this repetition. The Stop Rule Actions action from either this or another rule will stop all Repeat Actions, irrespective of the Stop selection.
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| − | Repeat Actions
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| − | some actions...
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| − | END-REP
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| − | A Repeat Actions, like any action, can have a condition specified. If the condition is false, the Repeat Actions block of actions will not be executed. If the condition becomes false during repetition, the repetition will be stopped (not in the case of Repeat a selected number of times). This provides three features well known to computer programmers; A while-loop, a for-loop and repeat-until loop. The while-loop runs only if the condition is true, and stops if it is false. A for-loop runs for a fixed number of times, but if a condition exists, it will only start that iteration if the condition is true; the condition is not retested during iteration. A repeat-until loop runs until a condition becomes true, running at least once.
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| − | ''While loop - repeat while the condition is true:''
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| − | IF (condition) Repeat Actions
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| − | some actions...
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| − | END-REP
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| − | ''For loop (repeat n times):''
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| − | Repeat Actions n times
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| − | some actions...
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| − | END-REP
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| − | ''Conditional For loop (repeat n times if condition is true):''
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| − | IF (condition) Repeat Actions n times
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| − | some actions...
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| − | END-REP
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| − | ''Repeat-Until loop:''
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| − | Repeat Actions with Stop selected
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| − | some actions
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| − | IF (condition) Stop Repeating Actions
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| − | END-REP
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| − | Repeat Actions may not be nested. END-REP is optional, and if omitted, all actions after Repeat Actions are repeated. Note the "END-REP" does not have anything to do with the when the Repeated Actions will stop repeating -- it merely marks the end of the list of actions to be repeated. If you use Repeat These Actions without N Times (for loop), and without a Condition (while loop), and without a Conditional Stop, and without Stop on Truth Change (for rules only), that means to repeat forever. That is probably not what you want to have happen. In this case, some other rule would need to cause the repetition to stop.
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| − | ==Wait for Events and Wait for Condition==
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| − | Wait for Events pauses rule execution until some specified event occurs. Multiple events can be defined to cause the wait to end. In effect, this introduces another trigger-like capability into the actions. There is also an event type specifically for Wait for Events, Elapsed Time. When the Elapsed Time expires, the wait will be over, irrespective of other events the wait may be waiting for.
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| − | Wait for Condition is similar to Wait for Events, but instead a condition is evaluated. If the condition is true, no wait occurs. Otherwise, the rule execution is paused until the condition is met.
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| − | Wait for Events and Wait for Condition may be used in a Simple Conditional Action. Both pending Wait for Events and Wait for Condition are cancelled each time a rule is triggered, and be cancelled by another rule with Stop Rule Actions, or by Cancel Wait action (which presumably would have been in a delayed action).
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| − | ==Custom Actions==
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| − | In addition to Custom Commands as have been available in prior versions, Rule 3.0 introduces Custom Actions. A Custom Action allows you to select a device, and send any of the commands that device supports along with parameters it may take. While Custom Commands are pre-defined and available to all rules, a Custom Action is created within your actions and is specific to the rule where it is created.
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| − | ==Global Variables==
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| − | Global Variables are now displayed on Rule Machine main page. When creating one, it must be initialized. Global variable values can also be changed in Rule Machine. When a global variable is deleted, a warning is given if the variable is in use in a rule/trigger et al, and if deleted anyway, they are removed from the rule where they are in use. This removal may leave such a rule with holes in it. Conditions based on variables will be removed, which in turn may erase the rule definition. Actions that set variables will be removed. Variables used in comparisons will leave the comparison missing what is to be compared. Actions with dimmers/bulbs set by variables will have missing settings. Manage your global variables with some care to avoid problems.
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| − | ''Global Variables Can Be Used for Level/Color''
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| − | Global variables can be used in actions that set dimmer or bulb levels, color temperature, or hue/saturation values. To use a variable in this way, include it with %global-variable-name%. In each case only a "Number" global variable is allowed, and it is not range checked
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| − | ''Global Variables can be set by endpoint''
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| − | A string Global Variable can be set by an endpoint trigger. This is an addition to the [Rule Machine API](https://community.hubitat.com/t/rule-machine-api/7104).
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| − | ''Global Variables can be used with parameters for Custom Actions''
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| − | A Global Variable can be used with parameters by using %global-variable-name%.
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| − | ''Global Variables in messages''
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| − | To include the value of a global variable in a message string (or HTTP request url or body), use %global-variable-name%.
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| − | ==Run actions from UI==
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| − | When you first create a new rule, you must hit Done on the main page to install the rule. If you reopen the rule, its actions can be run by hitting Run Actions button. If you change the Trigger Events in any way, you must either hit Done or Update Rule button.
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| − | You can select which types of logging you want to see in Logs. This is a very good way to determine exactly what a rule is doing.
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| − | ==List of Actions==
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| − | <pre> Conditional Actions
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| − | IF (conditions) THEN
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| − | ELSE-IF (conditions) THEN
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| − | ELSE
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| − | END-IF
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| − | Simple Conditional Action
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| − | Control Switches, Push Buttons
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| − | Turn switches on
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| − | Turn switches off
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| − | Toggle switches
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| − | Flash switches
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| − | Set switches per mode
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| − | Push a button
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| − | Push a button per mode
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| − | Set Dimmers and Bulbs
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| − | Set dimmer level
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| − | Toggle dimmer level
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| − | Adjust dimmer level
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| − | Set dimmer level per mode
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| − | Fade dimmer level over time
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| − | Start raising dimmer level
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| − | Start lowering dimmer level
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| − | Stop changing dimmer level
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| − | Set color and level
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| − | Toggle color and level
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| − | Set color and level per mode
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| − | Set color temperature and level
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| − | Toggle color temperature and level
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| − | Set color temperature and level per mode
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| − | Activate Scenes, Adjust Shades or Fans
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| − | Activate scenes
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| − | Activate scenes per mode
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| − | Open shades
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| − | Close shades
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| − | Set shade position
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| − | Set fan speed
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| − | Cycle fans
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| − | Control HSM, Garage Doors, Locks or Valves
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| − | Arm/Disarm Hubitat® Safety Monitor
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| − | Open garage door
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| − | Close garage door
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| − | Lock locks
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| − | Unlock locks
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| − | Open valves
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| − | Close valves
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| − | Control Thermostats or Thermostat Scheduler
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| − | Set thermostats
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| − | Set Thermostat Scheduler
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| − | Send or Speak a Message, Send HTTP Request
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| − | Send or Speak a Message
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| − | Send HTTP Get
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| − | Send HTTP Post
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| − | Control Music Player, Sounds
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| − | Control Music Player
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| − | Sound Tone
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| − | Sound Chime
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| − | Control Siren
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| − | Set Mode or Global Variables, Run Custom Action
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| − | Set Mode
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| − | Set Global Variable
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| − | Run Custom Action
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| − | Set Private Boolean, Run/Stop/Pause Rules
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| − | Set Private Booleans True
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| − | Set Private Booleans False
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| − | Run Rule Actions
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| − | Stop Rule Actions
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| − | Pause Rules
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| − | Resume Rules
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| − | Capture/Restore, Device Refresh or Polling
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| − | Capture Devices
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| − | Restore Devices
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| − | Refresh devices
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| − | Poll devices
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| − | Start Z-Wave poll on switches
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| − | Stop Z-Wave poll on switches
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| − | Start Z-Wave poll on dimmers
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| − | Stop Z-Wave poll on dimmers
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| − | Delay or Repeat Actions, Wait
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| − | Delay Actions
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| − | Delay Actions Per Mode
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| − | Cancel Delayed Actions
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| − | Repeat Actions
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| − | End Repetition
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| − | Stop Repeating Actions
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| − | Wait for Events
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| − | Wait for Condition
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| − | Cancel Wait
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| − | Exit Rule</pre>
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