Modbus TCP Server Table Missing IO PIN RUT956/TRb245

[thiago_vale]

Hello,

I am attempting to read the current Digital I/O (Input/Output) pin status from both the Teltonika RUT956 and TRB245 devices using the Modbus TCP Server service.

I have consulted the official documentation (including the wiki) but was unable to locate the equivalent Modbus register addresses for the digital I/O pins. Only registers for Analog Input were found.

I cant believe that a trivial feature —such as setting a dedicated Modbus register address for each digital I/O—would be unavailable on these devices.

Could someone please provide the updated Modbus TCP register map for the RUT956 and TRB245, specifically including the addresses for digital I/O status?

RUT956 Monitoring via Modbus - Teltonika Networks Wiki

TRB245 Monitoring via Modbus - Teltonika Networks Wiki

Another question is about the “data sources” from the same Service (modbus tcp client). I cant set any, cause isnt possible to set a “register source”. What could be happening?

Thx in advance!

[Justinas]

Greetings,

We are currently working on your inquiry and will get back to you as soon as possible.

Best Regards,
Justinas

[Justinas]

Greetings,

All register numbers can be found here:

Monitoring via Modbus - Teltonika Networks Wiki

A request to read the Digital Input (DIN1) state should look similar to the example shown here:

@thiago_vale

Another question is about the “data sources” from the same Service (modbus tcp client). I cant set any, cause isnt possible to set a “register source”. What could be happening?

Could you please clarify what you’re trying to achieve with this register configuration?

Best Regards,
Justinas