Modbus - RTU - TRB256 Reading Values

Hello,

I am trying to write/read values from a deye hybrid inverter using a TRB256, as a RTU Client.

I have set the correct settings and have checked connectivity through a USB to Serial connection.

But when testing registers, I i get “Failed to test request, check your configuration”

Do anyone have any tips on how to proceed with troubleshooting?

Best regards,
Bjorn

Hello,

Since you are using RS485 in half-duplex mode, make sure that R+ and D+, as well as R- and D- are bridged like so:
image
If this is not the case, could you also share a screenshot of the Modbus Client configuration, as well as request configuration?

Best regards,

Thank you for the fast and prompt response.
The gateway has been bridged accordning to the image posted.

This is the setup:
image


Register 214 is supposed to be SOC,

This topic was automatically closed after 15 days. New replies are no longer allowed.