# Problems with Modbus device

**URL:** <https://forum.inductiveautomation.com/t/problems-with-modbus-device/16076>\
**Category:** Ignition\
**Created:** [November 21, 2017, 9:37am UTC](https://forum.inductiveautomation.com/t/problems-with-modbus-device/16076 "2017-11-21T09:37:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![maniaero14](https://avatars.discourse-cdn.com/v4/letter/m/ad7895/32.png) [@maniaero14](https://forum.inductiveautomation.com/u/maniaero14)\
**Post date:** [November 21, 2017, 9:37am UTC](https://forum.inductiveautomation.com/t/problems-with-modbus-device/16076/1 "2017-11-21T09:37:18Z")

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I am try to this method, same way set to OPU-UA Tag path ( [PAC3200]1.HRF65 ) its not read the value .Pls help me .  
Device will be connected.

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**Author:** ![chi](https://avatars.discourse-cdn.com/v4/letter/c/0ea827/32.png) [@chi](https://forum.inductiveautomation.com/u/chi)\
**Post date:** [November 30, 2017, 1:50pm UTC](https://forum.inductiveautomation.com/t/problems-with-modbus-device/16076/2 "2017-11-30T13:50:35Z")

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What exactly is your problem? Is there any error or do you just receive a wrong value?  
For the PAC3200 disable ‘One based addressing’ in the device config to use the register numbers as they are listed in the manual.