# RedPLC undefined errors with coil and contact

**URL:** <https://discourse.nodered.org/t/redplc-undefined-errors-with-coil-and-contact/90325>\
**Category:** General\
**Created:** [22 August 2024 01:38 UTC](https://discourse.nodered.org/t/redplc-undefined-errors-with-coil-and-contact/90325 "2024-08-22T01:38:30Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![txrocks](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/txrocks/32/92736_2.png) [@txrocks](https://discourse.nodered.org/u/txrocks)\
**Post date:** [22 August 2024 01:38 UTC](https://discourse.nodered.org/t/redplc-undefined-errors-with-coil-and-contact/90325/1 "2024-08-22T01:38:30Z")

</div>

Hello,

I am trying to use RedPLC for the first time. I keep getting an error of undefined on a coil that I have on my first rung and the contact on the second rung.

Are there any other tutorials or examples ? I have the PDF and still seem to  
be missing something.

thank you  
I was attempting to upload the screen shot and I am unable to.

---

<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:** [20 November 2024 01:39 UTC](https://discourse.nodered.org/t/redplc-undefined-errors-with-coil-and-contact/90325/2 "2024-11-20T01:39:25Z")

</div>

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.