FMC125 TCP/UDP Ascii Buffered . How to test it?

Hi , have a good day.
Im working with FMC125 testing the RS232 Mode. I got communication with the server using TCP/UDP Ascci in both ways.
Using TCP/UDP Ascii Buffered have not get any result . How should be the message to be sent ? Im using x-ctu program to test the serial port.

At the end what Im looking for is to get the latitude and longitude added to the serial message.

Thanks a lot for your help.

Hi Matta,

Good day to test it please use this wiki page: FMC125 Testing RS-232 and RS-485 TCP link mode - Wiki Knowledge Base | Teltonika GPS (

Change the mode to TCP/UDP ASCII buffered mode.

TCP/UDP Ascii buffered mode.

  • It is used to capture data from RS232 and save it in the buffer if there is no connection with the server and data cannot be sent immediately.

  • Once the connection is established, RS232 data from the buffer is transmitted after all records are sent. Data is sent in the codec 13 protocol.

  • In Buffered modes – the device sends data from the external device to both main and backup/duplicate servers.

Wiki page for reference:

  1. FMC125 RS-232 and RS-485 - Wiki Knowledge Base | Teltonika GPS (
  2. Codec - Wiki Knowledge Base | Teltonika GPS (

Maynard C.

Hi , thanks a lot for your answer .
I resolve the problem updating the firmaware and Im receiving serial data and sending serial data to the server using TCP/UDP ascci and others similar modes,

Now the issue is using the delimeter mode , I can send serial info to the server and getting the coords and time , but when i try to send info from server to the serial gps port using #DO DAT, I cant see the info in the serial port but the server receives the acknowledge message : #NOT OK.

So , Im not sure what else I have to do to view the info in the serial port like the other tcp/udp modes.

Hi Matta,

Good day, if I understand it correctly, you want to send the GPRS command from your server using delimiter mode, in this case, the device will not receive it because delimiter mode only reads the data from the RS232 port with AVL ID109.

Firmware: FMC125 RS-232 and RS-485 - Wiki Knowledge Base | Teltonika GPS (

Maynard C.

Thanks Maynard , You are understanding well , your explanation is clear for me now.
I replied in the other post with some question.

Thanks a lot . Your are very kind.

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