# How to Run OpenPLC Timer using Ladder Logic

**URL:** <https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387>\
**Category:** General\
**Created:** [25 March 2019 07:16 UTC](https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387 "2019-03-25T07:16:08Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![MrudangD](https://avatars.discourse-cdn.com/v4/letter/m/a183cd/32.png) [@MrudangD](https://discourse.nodered.org/u/MrudangD)\
**Post date:** [25 March 2019 07:16 UTC](https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387/1 "2019-03-25T07:16:08Z")

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How to Run OpenPLC Node in Timer using Ladder Logic .

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**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:** [25 March 2019 08:35 UTC](https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387/2 "2019-03-25T08:35:25Z")

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Which node is that? node-red-xxx.xxx

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**Author:** ![MrudangD](https://avatars.discourse-cdn.com/v4/letter/m/a183cd/32.png) [@MrudangD](https://discourse.nodered.org/u/MrudangD)\
**Post date:** [25 March 2019 10:15 UTC](https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387/3 "2019-03-25T10:15:44Z")

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npm install node-red-contrib-openplc

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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:** [25 March 2019 15:44 UTC](https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387/4 "2019-03-25T15:44:58Z")

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> [@MrudangD](#):
>
> node-red-contrib-openplc

That node, I believe, uses modbus to communicate with the device.  
Are you asking for a user interface in node-red that gives you ladder logic programming? I see in the flows library that there is one ladder logic node, but there seems to be no documentation so whether that will help you I don't know

> **[node-red-contrib-nucleus-ladder](https://www.npmjs.com/package/node-red-contrib-nucleus-ladder)**
>
> Tyrion's Node-RED nodes supporting common ladder logic functions.. Latest version: 1.1.1, last published: 5 years ago. Start using node-red-contrib-nucleus-ladder in your project by running \`npm i node-red-contrib-nucleus-ladder\`. There are no other...

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**Author:** ![MrudangD](https://avatars.discourse-cdn.com/v4/letter/m/a183cd/32.png) [@MrudangD](https://discourse.nodered.org/u/MrudangD)\
**Post date:** [27 March 2019 05:18 UTC](https://discourse.nodered.org/t/how-to-run-openplc-timer-using-ladder-logic/9387/5 "2019-03-27T05:18:29Z")

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Okay i will try and work on it.