- Connect the X2 logger to a PC and launch the CONNECT software.
- Navigate to Tool | X2 RTU | Cellular within CONNECT.
- Select Turn Power ON to startup the X2’s RTU.
- Note that this process may take up to 30 seconds to complete (15-sec typical).
- The RTU will power down every 10 minutes and will require the RTU power to be turned on again.
- If this fails, verify the selected COM port is correct and retry.
Verify Current APN Settings
- To confirm the active APN settings, select and send the AT+CGDCONT? command from the Direct Command queue list.
- Depending on the model of cellular X2, the system will actively use either the 1st or 3rd APN setting profiles on the modem.
- Most 4G AT&T and International models will use the 1st APN profile.
- All Verizon 4G modems will use the 3rd APN profile.
Configure New APN Settings
- In the PDP Context field of the menu, enter the following information:
- CID– the cid value will be either 1 or 3 and reflects which APN profile the settings are being configured for.
- Select 1 if the system has an AT&T of International-type modem installed.
- Select 3 if the system is using a Verizon modem.
- PDP Type– select IP as the default PDP Type.
- If the “IP” setting does not work, try IPV4V6 followed by the other options, as this may differ depending on service provider.
- Choose from a variety of pre-selected APN values.
- 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.
- Once the values are entered, click Set. Once the settings are committed a prompt will appear indicating it was successful.
- 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.
- Send the AT+CMEE=2 Direct AT command to turn on extended error codes.
- Read the Signal Quality of the system to verify it is within the -51dBm to -90dBm range.
- 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 connections will display the IP address the modem was assigned during its connection request.
- Connections that fail will display one of many messages (facilitated by the extended error code activation in step 1). Some common ones are:
- ‘SIM not inserted’- indicates a loose or improperly installed SIM card in the modem.
- ‘Activation Failed’-generally a cellular account setup issue.
- ‘Requested Service Option not subscribed’- generally a cellular account setup issue.
- ‘Unspecified GPRS error’- typically a cellular account setup issue or an incompatibility between the network in use and the supported cell modem/antenna bands.
- [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.
Useful Diagnostic Commands
- Read back the cell modem’s IMEI number and the SIM ID number.
- Send the AT#CGMM to return the model name of the installed modem.