Cell Terminal


Establish Connection

  1. Connect the X2 logger to a PC and launch the CONNECT software.
  2. Navigate to Tool | X2 RTU | Cellular within CONNECT.

Navigate to Tool | X2 RTU | Cellular


  1. Select Turn Power ON to startup the X2’s RTU.
    1. Note that this process may take up to 30 seconds to complete (15-sec typical).
    2. The RTU will power down every 10 minutes and will require the RTU power to be turned on again.
    3. If this fails, verify the selected COM port is correct and retry.

Turn on the X2 RTU Power.


Power on success.


Verify Current APN Settings

  1. To confirm the active APN settings, select and send the AT+CGDCONT? command from the Direct Command queue list.

Response to AT+CGDCONT? command displaying the modem’s currently configured APN profiles.


  1. Depending on the model of cellular X2, the system will actively use either the 1st or 3rd APN setting profiles on the modem.
    1. Most 4G AT&T and International models will use the 1st APN profile.
    2. All Verizon 4G modems will use the 3rd APN profile.


Configure New APN Settings

  1. In the PDP Context field of the menu, enter the following information:
    1. CID– the cid value will be either 1 or 3 and reflects which APN profile the settings are being configured for.
    2. Select 1 if the system has an AT&T of International-type modem installed.
    3. Select 3 if the system is using a Verizon modem.

Set CID value.


  1. PDP Type– select IP as the default PDP Type.
    1. If the “IP” setting does not work, try IPV4V6 followed by the other options, as this may differ depending on service provider.

Select PDP Type.


  1. APN
    1. Choose from a variety of pre-selected APN values.

Pre-selected APN list.


    1. If the required APN is not on the list, which will more often than not be the case, enter in the value enclosed in quotations.

Example of setting an APN on a 4G Verizon X2 with a custom APN.


  1. Once the values are entered, click Set. Once the settings are committed a prompt will appear indicating it was successful.

Successfully configured the modem APN settings.


  1. It is recommended to read back the APN settings via the AT+CGDCONT? Direct Command following the change to verify they are properly listed on the modem.


Test Network Connection

After the modem APN settings have been configured, test the modem’s network connection.

  1. Send the AT+CMEE=2 Direct AT command to turn on extended error codes.

Turn on extended error code reponses in the modem.


  1. Read the Signal Quality of the system to verify it is within the -51dBm to -90dBm range.

Verify the signal strength is adequate.


  1. Send either the AT#SGACT=1,1 (for AT&T/International) or AT#SGACT=3,1 (for Verizon) direct commands to query the modem to connect to the network and resolve an IP address.

Successful connection of a Verizon modem, indicated by the return of an IP address.


    1. Successful connections will display the IP address the modem was assigned during its connection request.
    2. Connections that fail will display one of many messages (facilitated by the extended error code activation in step 1). Some common ones are:
      1. ‘SIM not inserted’- indicates a loose or improperly installed SIM card in the modem.
      2. ‘Activation Failed’-generally a cellular account setup issue.
      3. ‘Requested Service Option not subscribed’- generally a cellular account setup issue.
      4. ‘Unspecified GPRS error’- typically a cellular account setup issue or an incompatibility between the network in use and the supported cell modem/antenna bands.


  1. [Optional] After the modem has returned an IP address successfully, test the system’s ability to contact the WQData LIVE Data Center via the AT#PING=wqdatalive.com direct command.

Modem successfully pinged WQData LIVE.


Useful Diagnostic Commands

  • Read back the cell modem’s IMEI number and the SIM ID number.

Read back the X2’s cell modem IMEI and SIM ID number- useful for verifying account setup information with a service provider.


  • Send the AT#CGMM to return the model name of the installed modem.

Read modem model number.