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Hi 

I'm using the test feature on the Modbus server. Firmware version RUT9XX_R_00.06.06.1

On some devices it returns the actual register value but on others it returns success.

For the devices that return success I am having difficulty in getting an expected register value. I use the Modbus to server (MQTT) to actually read the data. 

Can you please let me know what is happening?

Thanks

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Hi

With some further testing using a Modbus master program, I found I was requesting incorrect register values.

I'm not sure why the Modbus server on the RUT returns a "Success" response.

Regards

Neil
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Dear sir,

If you use wrong slave ID or wrong register/coil/parameter numbers. In such cases you will observe success instead of values of registers.

Just double check ones. Same setup is tested by me on my rut9xx with same firmware and it is working fine.

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Hello,

We will check with RnD, why "Success" response was returned in your case.
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We have updated algorithm for Modbus master and in future firmware release it will return error.
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Dear sir,

If you use wrong slave ID or wrong register/coil/parameter numbers. In such cases you will observe success instead of values of registers.

Just double check ones. Same setup is tested by me on my rut9xx with same firmware and it is working fine.

-Rasure