# Undocumented primary client interface packet types

**URL:** <https://forum.universal-robots.com/t/undocumented-primary-client-interface-packet-types/2124>\
**Category:** Robot Communication\
**Created:** [June 15, 2018, 11:22am UTC](https://forum.universal-robots.com/t/undocumented-primary-client-interface-packet-types/2124 "2018-06-15T11:22:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![daniele.genero](https://avatars.discourse-cdn.com/v4/letter/d/e19b73/32.png) [@daniele.genero](https://forum.universal-robots.com/u/daniele.genero)\
**Post date:** [June 15, 2018, 11:22am UTC](https://forum.universal-robots.com/t/undocumented-primary-client-interface-packet-types/2124/1 "2018-06-15T11:22:32Z")

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Hi,  
I’m using the primary client interface.  
I receive undocumented packet types: 24 and 23, and message type 12 of packet type 20.  
Is it possible to have a complete documentation?  
Thanks

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<div class="post-metadata">

**Author:** ![jbm](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/jbm/32/614_2.png) [@jbm](https://forum.universal-robots.com/u/jbm)\
**Post date:** [June 15, 2018, 11:39am UTC](https://forum.universal-robots.com/t/undocumented-primary-client-interface-packet-types/2124/2 "2018-06-15T11:39:37Z")

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Some packages are only used internally between PolyScope and URControl.  
These are not documented, and can change wo. notice version by version.