# Node serial port, how to perform crc check

**URL:** <https://discourse.nodered.org/t/node-serial-port-how-to-perform-crc-check/82425>\
**Category:** General\
**Tags:** function-node\
**Created:** [28 October 2023 14:17 UTC](https://discourse.nodered.org/t/node-serial-port-how-to-perform-crc-check/82425 "2023-10-28T14:17:43Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [28 October 2023 16:36 UTC](https://discourse.nodered.org/t/node-serial-port-how-to-perform-crc-check/82425/5 "2023-10-28T16:36:42Z")

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Assuming you know how to extract that CRC at the end of the data, you can likely use [this solution](https://discourse.nodered.org/t/creating-crc16-xmodem-hex-value/81981/3) to compute and verify it.

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_[View the full topic](https://discourse.nodered.org/t/node-serial-port-how-to-perform-crc-check/82425)._