Modbus Problem moved from RUT950 to RUTC50

[Dr.Pillepalle]

Hello,

I installed my new RUTC50 7.11.3 yesterday (previously RUT950). I use Modbus TCP as a server for a connection to Home Assistant - client. I copied the Modbus settings from the 950 to the C50 1:1.

Some registers are displayed correctly in Home Assistant (e.g. registers 1, 7 39, 55…). For other registers (e.g. registers 3, 5, 23…) I get the error 131,3 IllegalAddress in Home Assistant.

Who can help here?

[Dr.Pillepalle]

Adding a screnshot for better understanding.

Row 1 and 2: reading register address 1 for 2 registers (System uptime) - ok
Row 4 and 5: Reding register address 3 for 2 registers (System signal strength in dBm) - error

[Dr.Pillepalle]

Using the Teltonika TCP Modbus client to test the registers. Same problem. Seems to me that there ist a bug in 07.11.3

[Martynas]

Hello,

To correctly read system uptime and other required values, please use the register number instead of the register address as the starting point. For example:

• System Uptime:
  • Register Number: 2
  • Number of Registers: 2
  • Data Type: 32-bit UINT
• Mobile Signal Strength (in dBm):
  • Register Number: 4
  • Number of Registers: 2
  • Data Type: 32-bit INT

Additionally, ensure the correct data type is selected in each case to avoid errors.

I hope this helps! If you need further assistance or have additional questions, feel free to reach out.

Best regards,

[Dr.Pillepalle]

Hello Martynas,

Thank you for the quick response. To ensure that there is no error in Home Assistant I tried to read the first registers direct using the TCP Client part of the RUT950 Firmware, see attached. Same problem, see attached PDF. Any other ideas?

Peter