# Serial Gateway Module

**URL:** <https://forum.inductiveautomation.com/t/serial-gateway-module/16925>\
**Category:** General Discussion\
**Created:** [February 8, 2018, 2:23pm UTC](https://forum.inductiveautomation.com/t/serial-gateway-module/16925 "2018-02-08T14:23:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shwethag](https://avatars.discourse-cdn.com/v4/letter/s/e47774/32.png) [@shwethag](https://forum.inductiveautomation.com/u/shwethag)\
**Post date:** [February 8, 2018, 2:23pm UTC](https://forum.inductiveautomation.com/t/serial-gateway-module/16925/1 "2018-02-08T14:23:14Z")

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Hello All:  
Can someone give an example of using serial gateway module to communicate with Modbus RTU device?

Thanks,  
Shwetha.

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**Author:** ![shwethag](https://avatars.discourse-cdn.com/v4/letter/s/e47774/32.png) [@shwethag](https://forum.inductiveautomation.com/u/shwethag)\
**Post date:** [February 8, 2018, 2:33pm UTC](https://forum.inductiveautomation.com/t/serial-gateway-module/16925/2 "2018-02-08T14:33:21Z")

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Never mind. I got it.

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**Author:** ![aramirez](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/aramirez/32/5283_2.png) [@aramirez](https://forum.inductiveautomation.com/u/aramirez)\
**Post date:** [June 6, 2018, 5:42pm UTC](https://forum.inductiveautomation.com/t/serial-gateway-module/16925/3 "2018-06-06T17:42:42Z")

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I am facing with problems implementing it… Suggestions?  
The device appears connected, but when I try to add a tag (using addressing inside the tag, for example: [MCPM]1.IRF2049), I got a null value.

Ideas?