# Uavcan gui tool toggling messages (mac os)

**URL:** <https://forum.opencyphal.org/t/uavcan-gui-tool-toggling-messages-mac-os/606>\
**Category:** Applications & Usage\
**Created:** [August 30, 2019, 4:49pm UTC](https://forum.opencyphal.org/t/uavcan-gui-tool-toggling-messages-mac-os/606 "2019-08-30T16:49:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Malis](https://forum.opencyphal.org/letter_avatar_proxy/v4/letter/m/9e8a1a/32.png) [@Malis](https://forum.opencyphal.org/u/Malis)\
**Post date:** [August 30, 2019, 4:49pm UTC](https://forum.opencyphal.org/t/uavcan-gui-tool-toggling-messages-mac-os/606/1 "2019-08-30T16:49:25Z")

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Hi guys,

On the uavcan tool on mac os, I m checking the network through my Zubax babel.  
I can see the node number 10 (an external device that I programmed) toggling on and off on the tool.  
The console output this message coming at ~1Hz

> INFO uavcan\_gui\_tool.widgets.node\_monitor Removing row 0  
> INFO uavcan\_gui\_tool.widgets.node\_monitor Adding new row 0 for node 10

Does it affect the behavior of my device?

Thanks,

Malis

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<div class="post-metadata">

**Author:** ![pavel.kirienko](https://forum.opencyphal.org/user_avatar/forum.opencyphal.org/pavel.kirienko/32/9_2.png) [@pavel.kirienko](https://forum.opencyphal.org/u/pavel.kirienko)\
**Post date:** [August 30, 2019, 7:36pm UTC](https://forum.opencyphal.org/t/uavcan-gui-tool-toggling-messages-mac-os/606/2 "2019-08-30T19:36:14Z")

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> [@Malis](#):
>
> Does it affect the behavior of my device?

It cannot affect the behavior of your device, but it may indicate that there is a problem. Either the device is not publishing NodeStatus frequently enough, or it is not incrementing its transfer-ID as it should. You can diagnose the problem using the Bus Monitor tool.