# Reading and writing values to Samsung BACnet DMS 2.5

**URL:** <https://forum.inductiveautomation.com/t/reading-and-writing-values-to-samsung-bacnet-dms-2-5/107078>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [June 5, 2025, 1:10pm UTC](https://forum.inductiveautomation.com/t/reading-and-writing-values-to-samsung-bacnet-dms-2-5/107078 "2025-06-05T13:10:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tamir\_zuriel](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@tamir\_zuriel](https://forum.inductiveautomation.com/u/tamir_zuriel)\
**Post date:** [June 5, 2025, 1:10pm UTC](https://forum.inductiveautomation.com/t/reading-and-writing-values-to-samsung-bacnet-dms-2-5/107078/1 "2025-06-05T13:10:28Z")

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Hello,

I have a BACnet TCP network defined by Samsung DMS 2.5 used as central controller for VRF units - which in turn, are connected to it via serial BACnet MS/TP.

All attempts to connect the VRF units directly through Instance and Device ID from the Igniton Gateway failed. However connecting through BACnet explorers does work - so I figure it's not a network issue.

Have anyone fiddled with BACnet MSTP sub networks of BACnet TCP ? how did you setup the connection ? gateway? designer ?

any help/ information is welcome.

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<div class="post-metadata">

**Author:** ![tamir\_zuriel](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@tamir\_zuriel](https://forum.inductiveautomation.com/u/tamir_zuriel)\
**Post date:** [July 1, 2025, 10:53am UTC](https://forum.inductiveautomation.com/t/reading-and-writing-values-to-samsung-bacnet-dms-2-5/107078/2 "2025-07-01T10:53:25Z")

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just to pop it up.

I'm surprised no one used it with Ignition by far ... Its a very common controller  
any information on how to connect Ignition to a BACnet TCP controller with sub MS/TP networks would be helpful.