# Stop flow with boolean

**URL:** <https://discourse.nodered.org/t/stop-flow-with-boolean/58038>\
**Category:** General\
**Created:** [9 February 2022 15:30 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038 "2022-02-09T15:30:36Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![larst](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@larst](https://discourse.nodered.org/u/larst)\
**Post date:** [9 February 2022 15:30 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/1 "2022-02-09T15:30:36Z")

</div>

hi

i need some help

i have a s7 input as boolean , and when this goes true i need to stop/block another flow.

does anyone have and idea?

br. lars

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<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [9 February 2022 16:19 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/2 "2022-02-09T16:19:07Z")

</div>

Save the boolean to a flow context variable then use a switch node with property set to the flow variable, and the output when is false.

Or use the contrib node simple gate.

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<div class="post-metadata">

**Author:** ![larst](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@larst](https://discourse.nodered.org/u/larst)\
**Post date:** [10 February 2022 02:41 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/3 "2022-02-10T02:41:20Z")

</div>

i tried to use contrib node simple gate, but didnt manage to get it to work

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<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [10 February 2022 07:04 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/4 "2022-02-10T07:04:46Z")

</div>

> [@larst](#):
>
> but didnt manage to get it to work

Show us how you have configured it and what messages you are feeding into it to open/close the gate.

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<div class="post-metadata">

**Author:** ![larst](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@larst](https://discourse.nodered.org/u/larst)\
**Post date:** [10 February 2022 14:35 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/5 "2022-02-10T14:35:52Z")

</div>

```auto
[{"id":"03ab325d69e76d84","type":"tab","label":"test 2","disabled":false,"info":"","env":[]},{"id":"8747bd5d66b28c63","type":"s7 in","z":"03ab325d69e76d84","endpoint":"917a01e163f8bc30","mode":"single","variable":"drink in progress","diff":true,"name":"","x":160,"y":320,"wires":[["6e625f41740fb350","94caffc9dc9c9dda"]],"outputLabels":["close"]},{"id":"6e625f41740fb350","type":"change","z":"03ab325d69e76d84","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"open","tot":"str"},{"t":"set","p":"topic","pt":"msg","to":"control","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":430,"y":320,"wires":[["0d6589e71ba7158b"]]},{"id":"0d6589e71ba7158b","type":"gate","z":"03ab325d69e76d84","name":"gate demo","controlTopic":"control","defaultState":"open","openCmd":"open","closeCmd":"close","toggleCmd":"toggle","defaultCmd":"default","statusCmd":"status","persist":false,"x":730,"y":220,"wires":[["7dc439623be9b9b3"]]},{"id":"af0308327297cf2e","type":"inject","z":"03ab325d69e76d84","name":"close","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"control","payload":"close","payloadType":"str","x":150,"y":240,"wires":[["0d6589e71ba7158b"]]},{"id":"8ebd88b64a6cc30a","type":"inject","z":"03ab325d69e76d84","name":"open","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"control","payload":"open","payloadType":"str","x":150,"y":200,"wires":[["0d6589e71ba7158b"]]},{"id":"7dc439623be9b9b3","type":"debug","z":"03ab325d69e76d84","name":"output","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":910,"y":220,"wires":[]},{"id":"94caffc9dc9c9dda","type":"change","z":"03ab325d69e76d84","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"close","tot":"str"},{"t":"set","p":"topic","pt":"msg","to":"control","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":440,"y":420,"wires":[["0d6589e71ba7158b"]]},{"id":"917a01e163f8bc30","type":"s7 endpoint","transport":"iso-on-tcp","address":"10.0.0.105","port":"102","rack":"0","slot":"1","localtsaphi":"01","localtsaplo":"00","remotetsaphi":"01","remotetsaplo":"00","connmode":"rack-slot","adapterauto":true,"adapterport":"","busaddr":"2","adapteraddr":"0","cycletime":"1000","timeout":"2000","verbose":"default","name":"","vartable":[{"addr":"DB1,X0.0","name":"start drink 1"},{"addr":"DB1,X0.1","name":"start drink 2"},{"addr":"DB1,X0.2","name":"start drink 3"},{"addr":"DB1,X0.3","name":"start drink 4"},{"addr":"DB1,X0.4","name":"start drink 5 "},{"addr":"DB1,X0.5","name":"start drink 6"},{"addr":"DB1,X0.6","name":"start drink 7"},{"addr":"DB1,X0.7","name":"start drink 8"},{"addr":"DB1,X1.0","name":"drink done 1"},{"addr":"DB1,X1.1","name":"drink done 2"},{"addr":"DB1,X1.2","name":"drink done 3"},{"addr":"DB1,X1.3","name":"drink done 4"},{"addr":"DB1,X1.4","name":"drink done 5"},{"addr":"DB1,X1.5","name":"drink done 6"},{"addr":"DB1,X1.6","name":"drink done 7"},{"addr":"DB1,X1.7","name":"drink done 8"},{"addr":"DB1,X2.0","name":"start homing"},{"addr":"DB1,X2.1","name":"homing ok"},{"addr":"DB1,X2.2","name":"jog forward"},{"addr":"DB1,X2.3","name":"jog backward"},{"addr":"DB1,X2.4","name":"la 25 frem"},{"addr":"DB1,X2.5","name":"la 25 tilbage"},{"addr":"DB1,X2.6","name":"drink in progress"},{"addr":"DB1,X4.0","name":"close"}]}]

```

---

<div class="post-metadata">

**Author:** ![Supergiovane](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/supergiovane/32/9716_2.png) [@Supergiovane](https://discourse.nodered.org/u/Supergiovane)\
**Post date:** [10 February 2022 14:38 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/6 "2022-02-10T14:38:31Z")

</div>

This should to the trick.  
It's a Boolean-Logic-Ultimate node. See the Interruptflow node.

[![](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/6/56de82db4ae5b1aef69464b96baed745c2eb44ca.jpeg "Interrupt Flow node for Node-Red") ](https://www.youtube.com/watch?v=1T1g0HCeYA8)

---

<div class="post-metadata">

**Author:** ![E1cid](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/e1cid/32/77971_2.png) [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Post date:** [10 February 2022 15:01 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/7 "2022-02-10T15:01:47Z")

</div>

Here is an example of my first suggestion, as it is simpler than using the gate node.  
top flow represents s7 input, and lower flow stops if s7 equals true.

```auto
[{"id":"fcdcb436.026088","type":"inject","z":"c791cbc0.84f648","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":140,"y":4720,"wires":[["cbd17163.79e8b8"]]},{"id":"cbd17163.79e8b8","type":"switch","z":"c791cbc0.84f648","name":"","property":"gate","propertyType":"flow","rules":[{"t":"false"}],"checkall":"true","repair":false,"outputs":1,"x":320,"y":4720,"wires":[["7dc439623be9b9b3"]]},{"id":"7dc439623be9b9b3","type":"debug","z":"c791cbc0.84f648","name":"output","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":540,"y":4720,"wires":[]},{"id":"af0308327297cf2e","type":"inject","z":"c791cbc0.84f648","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"false","payloadType":"bool","x":110,"y":4560,"wires":[["94caffc9dc9c9dda"]]},{"id":"8ebd88b64a6cc30a","type":"inject","z":"c791cbc0.84f648","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"true","payloadType":"bool","x":110,"y":4520,"wires":[["94caffc9dc9c9dda"]]},{"id":"94caffc9dc9c9dda","type":"change","z":"c791cbc0.84f648","name":"","rules":[{"t":"set","p":"gate","pt":"flow","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":350,"y":4520,"wires":[[]]}]

```

and here is an example of using gate node

```auto
[{"id":"8ebd88b64a6cc30a","type":"inject","z":"c791cbc0.84f648","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"true","payloadType":"bool","x":110,"y":4520,"wires":[["94caffc9dc9c9dda"]]},{"id":"94caffc9dc9c9dda","type":"change","z":"c791cbc0.84f648","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload ? \"close\" : \"open\"","tot":"jsonata"},{"t":"set","p":"topic","pt":"msg","to":"control","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":350,"y":4520,"wires":[["b8c4fef4.37f7f8"]]},{"id":"af0308327297cf2e","type":"inject","z":"c791cbc0.84f648","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"false","payloadType":"bool","x":110,"y":4560,"wires":[["94caffc9dc9c9dda"]]},{"id":"b8c4fef4.37f7f8","type":"gate","z":"c791cbc0.84f648","name":"","controlTopic":"control","defaultState":"open","openCmd":"open","closeCmd":"close","toggleCmd":"toggle","defaultCmd":"default","statusCmd":"status","persist":false,"storeName":"default","x":350,"y":4720,"wires":[["7dc439623be9b9b3"]]},{"id":"fcdcb436.026088","type":"inject","z":"c791cbc0.84f648","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":140,"y":4720,"wires":[["b8c4fef4.37f7f8"]]},{"id":"7dc439623be9b9b3","type":"debug","z":"c791cbc0.84f648","name":"output","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":540,"y":4720,"wires":[]}]

```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [11 April 2022 15:02 UTC](https://discourse.nodered.org/t/stop-flow-with-boolean/58038/8 "2022-04-11T15:02:31Z")

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