AT Command Tester – Troubleshooting Guide

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This topic contains 12 replies, has 2 voices, and was last updated by  lucas 1 week, 2 days ago.

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  • #10975

    Admin
    Keymaster

    AT Command Tester is a online browser-based tool to test and learn various features of GSM (2G/3G/4G) modem devices. All GSM technologies (GPRS/EDGE/UMTS/HSPA/LTE) are supported. The tool can be used with any GSM-based device such as modules, phones, tablets, 2G/3G routers, M2M devices etc..The tool uses AT commands for communication, which are supported by all GSM devices.

    Step #1 – Opening AT Command Tester
    AT Command Tester may not work in Chrome browser, so please try Internet Explorer or Firefox.
    Please make sure 32-bit Java SE Runtime Enviornment is installed.

    AT Command Tester can be started by opening the URL http://m2msupport.net/m2msupport/module-tester/
    You should see the Java warning message as shown below.

    Once you check the box and ‘Run’ the application, the tool will be launched as below.

    AT Command Tester is a Java based application.In order to sucessfully load, it requires Java security setting. Please check here for configuring the Java settings.

    Step #2 – Connecting the Device
    AT Command Tester connects to the serial port of the device which is connected to the PC.
    Once the software drivers for the device (provided by the device manufacturer) are properly installed on the system, device ports should be avaialble to connect. Please check instructions for how to find the device ports.

    If you are using Arduino-based shields, please check here for configuring the shield to work with AT Command Tester.

    Once you identify the correct device port, choose the correct port speed on the AT Command Tester. The devices may be configured for specific serial port speed (such as 9600, 19200, 115200) or they may also be configured for autobaud which means devices can connect on any speed. If the device is configured for autobaud, AT Command Tester will connect to the device irrespective for the baud rate setting.

    Once you select the device port and the correct baud rate (serial port speed), press ‘Connect’ on the AT Command Tester. The tool will send a query to the device. If teh query is successful, it will show the model, manufacturer and status under the ‘Connection’ section of the tool.

    Here is the sample output of a successful device connection.
    Successful Connection Output`
    No port is connected.

    Sending AT query..
    AT

    OK
    Successful response for AT query..

    AT+CGMM

    SIMCOM_SIM900

    OK
    Model Number : SIMCOM_SIM900
    AT+CGMI

    SIMCOM_Ltd

    OK
    Manufacturer : SIMCOM_Ltd

    
    
    If you see junk characters returned when you press 'Connect', it is more likely that the baud rate (port speed) is not configured correctly. You'll see a response like below,
    <span style="color: #0000ff;"><em><strong>Unsuccessful Connection Output</strong></em></span>

    Sending AT query..
    i ÿ
    Invalid or no response from the device. Please check the modem port and the baud rate.

    Disconnecting port COM21.
    `

    If AT Command Tester is not successfully connecting to the device, verify the serial connection using Putty.

    Step #3 – Get Logs
    If you’re still having issues, get the application log and post it in the forum.

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    #11237

    Cíntia Pinheiro

    Invalid or no response from the device. Please check the modem port and the baud rate.Disconnecting port COM5.

    i’m using a BT hc-06 (Linvor) it’s conneting to COM5 and Baud Rate =9600

    Why this is not working?

    #11241

    Admin
    Keymaster

    Are you able to communicate with the device through Putty or HyperTerminal?

    To check communication with Putty,

    http://m2msupport.net/m2msupport/check-serial-connection-using-putty/

    #11582

    Kyle Sweet

    I can connect and disconnect repeatedly using Hyperterm and other terminal applications but M2MSupport.net’s AT Command Tester does not work. Perhaps I need more control beyond only selecting 115200.

    Java Plug-in 11.77.2.03
    Using JRE version 1.8.0_77-b03 Java HotSpot(TM) Client VM
    User home directory = C:\Users\U324370
    —————————————————-
    c: clear console window
    f: finalize objects on finalization queue
    g: garbage collect
    h: display this help message
    l: dump classloader list
    m: print memory usage
    o: trigger logging
    q: hide console
    r: reload policy configuration
    s: dump system and deployment properties
    t: dump thread list
    v: dump thread stack
    x: clear classloader cache
    0-5: set trace level to <n>
    —————————————————-
    Missing Permissions manifest attribute in main jar: http://www.m2msupport.net/m2msupport/wp-content/themes/admired/ATCommandTester_v27.jar
    Stable Library
    =========================================
    Native lib Version = RXTX-2.1-7
    Java lib Version = RXTX-2.1-7
    COM3 – Serial
    COM8 – Serial
    COM9 – Serial
    COM10 – Serial
    COM11 – Serial
    COM3
    COM8
    COM9
    COM10
    COM11
    PortIdentifier is gnu.io.CommPortIdentifier@8bd2cb

    commPort is //./COM8

    AT

    #11574

    Joeri

    I have the same problem as Cíntia Pinheiro.

    I can connect with putty using same port and baud rate.

    grts
    Joeri

    #11654

    Moustapha

    ok

    #11687

    Rod

    It is no longer displaying the at commands being sent only the responses

    Nice software thank you vet much!

    #11737

    Sam

    Hi! Guys,

    I am Sam. Please help me. I want to test my modem. But when I have opened the software and find ports it replied “License is Invalid”. Please help what will i do regarding this issue?

    #11769

    Klaus

    hi,

    tried download of SetupATCommandTester.exe now several times, but always get a virus information and avira puts it into quarantine immediately. It says: TR/Dropper.Gen” found. No chance to run since avira stops executing even when i say “ignore” if I try to get it out of quarantine.

    also Java version is not running on win10. It always wants to install new java, but my version is the latest.

    Please help.

    Under win 8 I was successful running the jave version an was very satisfied with this Programm.

    #11772

    Admin
    Keymaster

    Hi Klaus,
    Did you try exclude the process from scanning?

    https://www.avira.com/en/support-for-home-knowledgebase-detail/kbid/900

    Tks..

    #12037

    Nick

    My modem doesn’t like the first at command ever it seems. But any following ones will work. Anyone seen this/know a work around for it so at command tester will actually connect?

    #12264

    veer

    hello,
    thanks for this great tool. i recently downloaded this tool after using the browser version of the tool. when i run the tool and try to find the ports i get a “license is invalid” message. could you please let me know how to fix this issue? tia

    #12263

    lucas

    Number of days valid 21
    Found ports :COM6

    Sending AT query..

    Invalid or no response from the device. Please check the modem port and the baud rate.Disconnecting port COM6.

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