Modbus TCP trigger to SMS alarm

[enerwise2024]

HI, I have been reading your manual about using the sms function but there are some points that I would like to clarify.

Modbus TCP Server Send SMS example - Teltonika Networks Wiki

My setup is I have a PLC acting as my Modbus TCP Server(192.168.1.100). I have created an alarm with a Boolean variable(ID:48) which by default is zero and will turn into 1 once its triggered.

I have a RUT200 loaded with Modbus TCP client package. So I have set my TCP client with the server ID.

But I am not sure what to put in my request section to trigger the SMS to happen. (My Boolean register number is 20 in my modbus TCP server). Do I set it as below?

my ASCII message is 0060125663\test
Do I need to convert my phone number to hex? If yes how?

Did I make any mistakes in the configuration?

[Unknown]

Have you indeed read this article you mentioned? It shows example where phone number is not listed in hex.

I would suggest reading through it, and replicating ALL of the steps mentioned there 1 to 1, i.e. to send message from the router itself.

Once then you have this setup working as described on the article, on then try to modify it to your solution.

Note: To initiate message FROM your PLC, your PLC needs to act as Modbus TCP Client, and your RUT200 as Modbus TCP Server. In essence you have made everything in reverse.

[enerwise2024]

Hi yes I have read it multiple times. The reason I am asking is because it doesn’t work which makes me wonder do I need to switch it to HEX instead.

Can you help me verify if I have my phone format correctly?
00(+) 60(country code) 1233345678(phone number)

00601233345678 - Input it like this?

I have replicated all the steps and its not working at the moment.

Reply to note: So which function in Teltonika should I use? Modbus TCP Client function tab right?

[Unknown]

Of course.

On your Teltonika device, just enable the “Services → Modbus → Modbus TCP Server” functionality, e.g.:

Then, on your PLC, configure the Modbus TCP Client (it might also be called Modbus TCP Master) application. Try to send the following value to register 398 of your Teltonika equipment:

00601233345678\u0000\u0000\u0000\u0000\u0000\u0000test

Then send 1 to register 397.

[Justinas]

Greetings,

Have the suggestions by @Unknown helped you out, or do you need any more help?

Best Regards,
Justinas