# X20CS1030 modbus module

**URL:** <https://community.br-automation.com/t/x20cs1030-modbus-module/8762>\
**Category:** B&R Software & Runtime\
**Tags:** automation-studio, modbus\
**Created:** [October 22, 2025, 12:11pm UTC](https://community.br-automation.com/t/x20cs1030-modbus-module/8762 "2025-10-22T12:11:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Hashmith\_Rajcoomar](https://avatars.discourse-cdn.com/v4/letter/h/FF8800/32.png) [@Hashmith\_Rajcoomar](https://community.br-automation.com/u/Hashmith_Rajcoomar)\
**Post date:** [October 22, 2025, 12:11pm UTC](https://community.br-automation.com/t/x20cs1030-modbus-module/8762/1 "2025-10-22T12:11:53Z")

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Good day,

I am pretty new to modbus communication. I have read a few forum posts online and have seen that quite a few people reference the sample project when it comes to integrating a modbus device.  
The issue i am having is that when i search the help and go to the examples for modbus it seems to blank. I also tried importing the project but it doesn’t seem to be available under my samples. I am currently using AS6 and a Evaluation license.

Is there any pdf help file i can download or any external download for the sample project?

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**Author:** ![tommi.piiparinen](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/tommi.piiparinen/32/2183_2.png) [@tommi.piiparinen](https://community.br-automation.com/u/tommi.piiparinen)\
**Post date:** [October 22, 2025, 12:31pm UTC](https://community.br-automation.com/t/x20cs1030-modbus-module/8762/2 "2025-10-22T12:31:33Z")

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If I remember correctly some installers were missing the samples, but I have attached the DRVmbus sample here.

[LibDRVmbus1\_ST.zip](https://community.br-automation.com/uploads/short-url/2wQuxci7apPbDs4a1pcztJKZvWW.zip) (6.7 KB)

[Automation Help: Example of Modbus Master in Structured Text](https://help.br-automation.com/#/en/6/libraries/drv_mbus/samples/st/ex_st1.html)

[Automation Help: Example of Modbus Slave in Structured Text](https://help.br-automation.com/#/en/6/libraries/drv_mbus/samples/st/ex_st2.html)

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**Author:** ![Hashmith\_Rajcoomar](https://avatars.discourse-cdn.com/v4/letter/h/FF8800/32.png) [@Hashmith\_Rajcoomar](https://community.br-automation.com/u/Hashmith_Rajcoomar)\
**Post date:** [October 22, 2025, 12:39pm UTC](https://community.br-automation.com/t/x20cs1030-modbus-module/8762/3 "2025-10-22T12:39:02Z")

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Thanks Tommi appreciate the help.

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<div class="post-metadata">

**Author:** ![Hashmith\_Rajcoomar](https://avatars.discourse-cdn.com/v4/letter/h/FF8800/32.png) [@Hashmith\_Rajcoomar](https://community.br-automation.com/u/Hashmith_Rajcoomar)\
**Post date:** [October 22, 2025, 2:31pm UTC](https://community.br-automation.com/t/x20cs1030-modbus-module/8762/4 "2025-10-22T14:31:55Z")

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Also just wanted to find out Tommi, is it possible to connect a modbus simulator if we simulating the hardware aswell?