# X90IF730.04-00 support for RS422

**URL:** <https://community.br-automation.com/t/x90if730-04-00-support-for-rs422/9977>\
**Category:** Controls & Vision\
**Tags:** x20\
**Created:** [February 3, 2026, 9:10am UTC](https://community.br-automation.com/t/x90if730-04-00-support-for-rs422/9977 "2026-02-03T09:10:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ron\_Ben\_Michel](https://avatars.discourse-cdn.com/v4/letter/r/FF8800/32.png) [@Ron\_Ben\_Michel](https://community.br-automation.com/u/Ron_Ben_Michel)\
**Post date:** [February 3, 2026, 9:10am UTC](https://community.br-automation.com/t/x90if730-04-00-support-for-rs422/9977/1 "2026-02-03T09:10:37Z")

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hello,

does the **X90IF730.04-00 communication module support RS422?**

i do not see it in the datasheet but in the AS module configuration it is possible to select it.

thank you.

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<div class="post-metadata">

**Author:** ![christian.bauer](https://dub1.discourse-cdn.com/brcommunity/user_avatar/community.br-automation.com/christian.bauer/32/238_2.png) [@christian.bauer](https://community.br-automation.com/u/christian.bauer)\
**Post date:** [February 3, 2026, 9:47am UTC](https://community.br-automation.com/t/x90if730-04-00-support-for-rs422/9977/2 "2026-02-03T09:47:57Z")

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The software would support RS422 but unfortunately the symetric pins are not wired to the CMC connector.

So in short: not possible and it is not mentioned in the technical specification.