Control of a device connected via MODBUS TCP/IP using an SMS command - RUT956

NETWORKING SOLUTIONS
1

Hi!
Please help, as I am out of ideas.
I have a RUT956 to which a device is connected via Modbus TCP/IP.
I want to configure the RUT in such a way that upon receiving an SMS with a specific content, it will send a specific value to a given Modbus register on this device via the Modbus TCP/IP protocol.
Device IP: 192.168.2.20
Port: 502
Modbus ID: 5
Modbus register: 40428
Value: 100
Modbus function: 6

Please help me with how to implement this. Thank you.

3

Hello,

Unfortunately, we don’t have an SMS utility for managing Modbus. However, in Services → Mobile Utilities → SMS Utilities, you can try creating a new rule and select “Execute custom script” as the action. This will allow you to create a custom script, specifying the actions the router should perform.

For script examples, please refer to our wiki page here: https://wiki.teltonika-networks.com/view/User_Scripts_examples.

Best regards,

4

how to install modpoll (mbpoll) via CLI? unfortunately during installation it gives me an error. Also during installation python3 gives me an error - out of memory, even though the router has a lot of memory.
does modbus_client have a “write” or “send_request” method? from what I found it only has tcp.test, serial.test and request_status

5

Hello,

Unfortunately, it is not possible to install modpoll directly via CLI on our devices.

Regarding the python3 package, you can check the available storage space by running the command: df -h

Additionally, I recommend reviewing the Modbus TCP Client API documentation, which can be found here: https://developers.teltonika-networks.com/reference/rutx50/7.10.1/v1.2/modbus#modbus-tcp-client

Best regards,

6

Hi, did you solve your problem? Did you have a sample script for this?

7

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