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Fujitsu general Limited UTY-VMSX

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Updated Jul 25, 2022

Download · v1.0.2

Description

Aquí el enlace al manual de usuario.

Inputs and outputs · 12

NameTypeUnit
57 Indoor temperature statusModbusºC
53 Operation mode statusModbus<v>
54 Operation ON_OFF statusModbus<v>
55 Set temperature statusModbus<v.1>
59 Error monitoringModbus<v>
60 Horizontal air directionModbus<v.1>
63 Economy mode operationModbus<v.1>
01 Operation mode setting_Modbus<v>
02 Operation ON_OFF settingModbus<v>
03 Set temperature settingModbus<v>
04 Airflow settingModbus<v>
05 Vertical air direction position statusModbus<v>

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Questions and answers

  1. Assistance Reading 16-bit Modbus Register for Temperature Limits

    Open

    Zach Meek

    Hi Loxone Support,

    I’m having trouble reading a specific 16-bit Modbus input register from a UTY-VMSX Modbus converter, which is connected to a Fujitsu indoor unit.

    According to the device documentation, register **30066** contains the **upper and lower temperature limits** for Cool/Dry mode, with the following format: - **Bits 0–7 (lower byte)** = Upper limit - **Bits 8–15 (upper byte)** = Lower limit - Temperature = set value ÷ 4 (e.g. 20°C = 80)

    In Loxone Config, I’ve set up a Modbus input with the following: - **IO Address**: 65 - **Command**: 4 – Read Input Register - **Data Type**: 16-bit Unsigned Integer - **Polling cycle**: 10s

    However, I’m consistently getting a value of `0`, even when I’m sure the unit is in Cool mode and temperature limits are set. I’ve tried enabling Byte Order.

    Could you confirm: 1. If this setup is correct for reading a 16-bit value at 30066? 2. Whether any additional settings (Byte Order, 0/1 indexing, etc.) could affect this? 3. If there's a way to extract the upper byte as a standalone value using correction or formula blocks?

    Any guidance would be much appreciated.

    Thanks, Zach

    1 reply

    1. Dennis Van Soom

      Hello Zach,

      for the 30066 you need to set IO address 65, command 4-Read Input Register, Data Type 16-bit Unsigned Integer. Byte Order should not be selected. So the settings you made should be correct regarding the documentation.

      Te calculate the bits you will get a decimal value this you can put on the binaire decoder so you get all 16 bits as a separate bit

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