Hello
I have a problem with sending an SMS message from the TRB142 router. I need to send the message via the RS 232 protocol. I connected my PLC controller with the TRB 142 router via RS232 serial communication, I made all the necessary settings on the PLC controller and the TRB 142 router, but the message cannot be sent. I made the following settings on the TRB 142 router:
Updated the latest firmware, Go to Services >> Serial Utilities >> Modem Control, Add a New Instance with the same communication settings as defined in the controller application, Mode has to be set on Full Control. In this mode, the TRB142 modem is completely started when the 2G, 3G, 4G LEDs are blinking and all signal LEDs are OFF.
I tried to send a message from the router itself, but it was not possible
From the screenshot, it appears that your gateway is running firmware version 7.06.8.
Could you please update your TRB142 to the latest 7.14.2 firmware and let me know if the issue still persists?
I updated the software but still have the same problem.Can you help me to send an SMS message via AT commands? What commands do I need to type in order to send an SMS message?
However, for full AT command functionality — as you’ve mentioned that RS232 is configured in Modem Control — you’ll need to follow these steps after enabling RS232 in Full Modem Control mode:
Connect the RS232 port from the TRB device to your PC.
Open PuTTY (or another serial terminal) app on your PC, select Serial connection type, set the correct COM port and baud rate, then click Open.
In the terminal, enter the command: AT+QCSQ=0 to disable continuous +QCSQ output.
Type ATE1 to enable local echo (so you can see the responses like “OK”).
You can now send any AT command — for example, the command to send an SMS message.
Please let me know how it goes or if you need further assistance.
I set up the router as you told me, the pictures are attached. I connected the router to the PC via rs232. When I connect via HyperTerminal, +QCSQ: “LTE”… is displayed on my screen,
