# OpenHAB - Serial port write error

**URL:** <https://forum.velbus.eu/t/openhab-serial-port-write-error/15765>\
**Category:** English\
**Created:** [April 30, 2019, 7:20pm UTC](https://forum.velbus.eu/t/openhab-serial-port-write-error/15765 "2019-04-30T19:20:04Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![MDAR](https://forum.velbus.eu/user_avatar/forum.velbus.eu/mdar/32/4215_2.png) [@MDAR](https://forum.velbus.eu/u/MDAR)\
**Post date:** [April 16, 2020, 4:51pm UTC](https://forum.velbus.eu/t/openhab-serial-port-write-error/15765/21 "2020-04-16T16:51:56Z")

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I’ve only just seen this post.  
I’ll look into it in more detail tomorrow when I’m back in my office.

There is a Verbose mode you can run VelServ in that might give you more information.

If you stop the service and start Velserv directly, you can add as many -vvvvv as you like at the end to get greater amounts of information.

Good luck

Stuart

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