ModBus to Samsung NASA protocol register not updating

Claudiu Marinescu

• July 16, 2024 14:14
• Edited

Hi, I have two intesis INMBSSAM064O000 modbus to samsung nasa gateways connected to two outdoor units. First one has 8 indoor units, the second one has 25 indoor units and I have a modbus software writing to the intesis via modbus tcp.

What happens, randomly, is that I write "off" to the state register on the modbus side and it is "off" in both intesis maps and on modbus, but the unit remains on (and the samsung nasa side in intesis maps shows on, see the screenshot below). This happens randomly and it is a problem, sometimes it stays on for a whole day although we keep sending off every 10 minutes or so. I also see some errors in intesis maps, also shown in the screenshot.

Any idea what could cause this and what to check at the connections between intesis and outdoor units or between outdoor units and indoor units ? 

 Thank you.

0

• Official comment

  

  Franziska Gültig

  • July 23, 2024 08:51

  Hi Claudio!

  This is to complex of a topic to answer in the Community Forum.

  I will create a Ticket for you.

  Please add (in the Ticket) the Following information:

  The Model information of the Devices you use. IO and OU numbers.

  Also more details on how your System is connected. (Maybe a drawing to get the basic's):  What is on the same bus, are there any devisions....

  And add Logs of the issue:

  How to create a Log with Intesis MAPS – HMS Support Portal (hms-networks.com)

  The log should contain the error and around 5 Minutes.

  br

  i.A Franziska Gültig

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