# Trouble with Modbus tags

**URL:** <https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284>\
**Category:** Ignition\
**Created:** [July 16, 2024, 2:07pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284 "2024-07-16T14:07:09Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Sawyer\_Jones](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@Sawyer\_Jones](https://forum.inductiveautomation.com/u/Sawyer_Jones)\
**Post date:** [July 16, 2024, 2:07pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/1 "2024-07-16T14:07:09Z")

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Hello, I'm working on a project to set up power monitoring station in Ignition. I'm having trouble connecting to tags. My device is connect to the OPC network. I read somewhere that I might have configured the device wrong from the start. The device I'm trying to connect to is the PowerLogic ION 7550.

Here's the mapping I found for it

 ![Screenshot 2024-07-16 100427](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/6/56508da6d1992b7e9aaeb7d142e183340caaa319.png)  
and here's the error I keep getting in ignition  
 ![Screenshot 2024-07-16 100611](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/1/71b620fab512bc5160b150d4d414ab70d723c393.png)  
Any help would be amazing

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**Author:** ![dkhayes117](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dkhayes117/32/68344_2.png) [@dkhayes117](https://forum.inductiveautomation.com/u/dkhayes117)\
**Post date:** [July 16, 2024, 2:34pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/2 "2024-07-16T14:34:58Z")

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Check your unit ID setup for the modbus comms, IE if it is 1 instead of 0, try this  
`[PWM1]1.HRUS40150`

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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:** [July 16, 2024, 2:35pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/3 "2024-07-16T14:35:37Z")

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Try these addresses:

- HR150
- 1.HR150
- 1.HR40150

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<div class="post-metadata">

**Author:** ![Sawyer\_Jones](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@Sawyer\_Jones](https://forum.inductiveautomation.com/u/Sawyer_Jones)\
**Post date:** [July 16, 2024, 2:38pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/4 "2024-07-16T14:38:31Z")

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This form is amazing. It worked and thank you for the help!

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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:** [July 16, 2024, 2:38pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/5 "2024-07-16T14:38:56Z")

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> [@Sawyer\_Jones](#):
>
> It worked

Which one 😃

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<div class="post-metadata">

**Author:** ![Sawyer\_Jones](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@Sawyer\_Jones](https://forum.inductiveautomation.com/u/Sawyer_Jones)\
**Post date:** [July 16, 2024, 2:52pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/6 "2024-07-16T14:52:57Z")

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Technically both. however, the address that didn't have the 40k in front was the value I wanted

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<div class="post-metadata">

**Author:** ![Sawyer\_Jones](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@Sawyer\_Jones](https://forum.inductiveautomation.com/u/Sawyer_Jones)\
**Post date:** [July 16, 2024, 2:53pm UTC](https://forum.inductiveautomation.com/t/trouble-with-modbus-tags/93284/7 "2024-07-16T14:53:41Z")

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the 1.HR150 for clarification