# OMRON FINS Trigger signal using bit

**URL:** <https://discourse.nodered.org/t/omron-fins-trigger-signal-using-bit/69224>\
**Category:** General\
**Created:** [19 October 2022 01:45 UTC](https://discourse.nodered.org/t/omron-fins-trigger-signal-using-bit/69224 "2022-10-19T01:45:01Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cubical](https://avatars.discourse-cdn.com/v4/letter/c/f4b2a3/32.png) [@cubical](https://discourse.nodered.org/u/cubical)\
**Post date:** [19 October 2022 01:45 UTC](https://discourse.nodered.org/t/omron-fins-trigger-signal-using-bit/69224/1 "2022-10-19T01:45:01Z")

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Hello guys, I've been using the OMRON FINS node to trigger a signal.

Issue is, how do I trigger a signal just like a differentiate up function?

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/9/b/9bf6a446abdab1c8de81af0e30a2b796ee906dd4.png)

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [19 October 2022 08:01 UTC](https://discourse.nodered.org/t/omron-fins-trigger-signal-using-bit/69224/2 "2022-10-19T08:01:38Z")

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> [@cubical](#):
>
> Issue is, how do I trigger a signal just like a differentiate up function?

- Move the bit/bool result into msg.payload
- Use an RBE node to block unless change
- Use a switch node to only allow `true` (or `1`) to pass

`OMRON --> CHANGE (copy value to payload) --> RBE (only output when value changes) --> SWITCH (is it on?)`

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<div class="post-metadata">

**Author:** ![cubical](https://avatars.discourse-cdn.com/v4/letter/c/f4b2a3/32.png) [@cubical](https://discourse.nodered.org/u/cubical)\
**Post date:** [19 October 2022 09:05 UTC](https://discourse.nodered.org/t/omron-fins-trigger-signal-using-bit/69224/3 "2022-10-19T09:05:28Z")

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> [@Steve-Mcl](#):
>
> switch n

Thanks so much Steve!

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [2 November 2022 09:05 UTC](https://discourse.nodered.org/t/omron-fins-trigger-signal-using-bit/69224/4 "2022-11-02T09:05:43Z")

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