# ModbusTCP comunication with SmartLogger

**URL:** <https://www.wago.community/t/modbustcp-comunication-with-smartlogger/2704>\
**Category:** CODESYS\
**Tags:** pfc200\
**Created:** [April 30, 2026, 5:08am UTC](https://www.wago.community/t/modbustcp-comunication-with-smartlogger/2704 "2026-04-30T05:08:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MichalM](https://avatars.discourse-cdn.com/v4/letter/m/8dc957/32.png) [@MichalM](https://www.wago.community/u/MichalM)\
**Post date:** [April 30, 2026, 5:08am UTC](https://www.wago.community/t/modbustcp-comunication-with-smartlogger/2704/1 "2026-04-30T05:08:33Z")

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I have problem with reading registers from SmartLogger 3000. When i am using external mldbustcp conector it works fine.

But Wago do not sent any Package in wireshark.

In background (like a docker ) works telegraf which sent data from smartlogger directly to database on VPS and it works fine.

But i need some of the information directly in codesys.

I try both FBModbisTCP and connection from device tree.

No efect at all…

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**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\
**Post date:** [May 7, 2026, 12:36am UTC](https://www.wago.community/t/modbustcp-comunication-with-smartlogger/2704/2 "2026-05-07T00:36:34Z")

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Hello,  
I assume WAGO is a Slave (RTU) / Server (TCP/UDP) ?  
What WAGO are you using ?  
If a controller, what program did you put inside the controller ?