# Question about system.serial functions

**URL:** <https://forum.inductiveautomation.com/t/question-about-system-serial-functions/34948>\
**Category:** Ignition\
**Created:** [May 21, 2020, 4:18pm UTC](https://forum.inductiveautomation.com/t/question-about-system-serial-functions/34948 "2020-05-21T16:18:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![luism.loveras](https://avatars.discourse-cdn.com/v4/letter/l/45deac/32.png) [@luism.loveras](https://forum.inductiveautomation.com/u/luism.loveras)\
**Post date:** [May 21, 2020, 4:18pm UTC](https://forum.inductiveautomation.com/t/question-about-system-serial-functions/34948/1 "2020-05-21T16:18:15Z")

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Good day  
I am trying to write a data frame using the system.serialwriteand system.serialwriteBytes but it is not possible they have some example it is a practice to read an RS232 serial port