# Difference between ATDExample and Weather

**URL:** <https://forum.inductiveautomation.com/t/difference-between-atdexample-and-weather/5545>\
**Category:** Module Development\
**Created:** [December 8, 2012, 9:55pm UTC](https://forum.inductiveautomation.com/t/difference-between-atdexample-and-weather/5545 "2012-12-08T21:55:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![lisawas](https://avatars.discourse-cdn.com/v4/letter/l/4bbf92/32.png) [@lisawas](https://forum.inductiveautomation.com/u/lisawas)\
**Post date:** [December 8, 2012, 9:55pm UTC](https://forum.inductiveautomation.com/t/difference-between-atdexample-and-weather/5545/1 "2012-12-08T21:55:43Z")

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For my next trick with Ignition, I’d like to write a proper OPC UA driver for a device that communicates via OPC XML. Since I’ve never done this before, I looked over and build the Abstract Tag Driver Example and Weather Component example that came with the SDK. Both modules installed alright, however, when I went to add a device of the ATDExample variety, there was no option for that device in the list.

The weather component popped up under Inductive Automation -\> weather. If I’m understanding the sample code correctly, the ATDExample type should appear under Examples -\> ATDExample. Neither the Examples folder, nor the ATDExample item appeared.

The DriverMeta -type classes looked almost identical. Why does one work and the other not?

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**Author:** ![lisawas](https://avatars.discourse-cdn.com/v4/letter/l/4bbf92/32.png) [@lisawas](https://forum.inductiveautomation.com/u/lisawas)\
**Post date:** [December 8, 2012, 10:45pm UTC](https://forum.inductiveautomation.com/t/difference-between-atdexample-and-weather/5545/2 "2012-12-08T22:45:45Z")

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I found the difference. In the ATDExample.properties file, Meta.Version and Meta.ReleaseDate read, “ShouldBeReplaced”. I thought the ANT build file did this, but apparently it didn’t. This threw an error in the console.

When I manually filled in these values, the Example folder and ATDExample items appeared. I’m not sure why this made a difference, unless something was expecting a date and got a string instead. I’ll have to keep investigating.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [December 10, 2012, 4:26pm UTC](https://forum.inductiveautomation.com/t/difference-between-atdexample-and-weather/5545/3 "2012-12-10T16:26:06Z")

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We’ll look into this, must be a bug somewhere 🙂