Question

Hi I cannot seem to read or write to Output registers on RUT955 (Firmware 6.04.5)? I can read all the input registers. Where does the output registers start, the maunals all say at 201, but i'm not sure about that.

Thanks

Answer 1

Hi,

Information how to change output values via Modbus is specified in wiki:

https://wiki.teltonika.lt/view/Monitoring_via_Modbus#Setting_router_values

Comments

Hi Thanks for the feedback. I have tried all versions of where I might think the digital output register might be, see below:

They say in the doc: Digital Output 1 is at 201 so I have tried:

01: Coil Status  = 00201, 00202

02: Input Status =10201, 10202

Input Registers = 30201, 30202

Holding Register = 40201, 40202

Not of these places seems to response to any read or write.

I can like I said real all the input values (for me to read them I use a Offset of 1), meaning:

System Temperature is in Register 5 so I will read it from 40006 (40001 + 5 = 40006), I have tried  the same with the digital outputs. Did you test the outputs in these

201 & 202 registers and can you read & write to them? I tried it using a couple for Modbus software programs, Modscan 64 just says"

** MODBUS EXCEPTION RESPONSE from the Slave Device **

Regards