Modem AT Command Descriptions
The following ‘AT’ commands are utilized in the CONNECT software to communicate directly with the internal modem. These commands can be used to setup and troubleshoot the internal modem settings.
Review the following article to establish communication with the internal modem and send the proper commands for setup:
| AT Command | Description | Example Response | Response Description |
| AT#CCID | Returns the SIM ID number from the SIM card. | <CR><LF> #CCID: 89010303300024357692<CR><LF> <CR><LF> OK<CR><LF> | — |
| AT#CGMM | Returns the device model identification code | <CR><LF> #CGMM: LE910-NAG<CR><LF> <CR><LF> OK<CR><LF> | — |
| AT#FWSWITCH? | Get current active firmware | <CR><LF> #FWSWITCH: 1,1<CR><LF> <CR><LF> OK<CR><LF> | The current active firmware is for Verizon (1,1). |
| AT#FWSWITCH=0,1 | Switch modem to AT&T Firmware | <CR><LF> OK<CR><LF> | The current active firmware has been successfully switched to AT&T. |
| AT#FWSWITCH=1,1 | Switch modem to Verizon Firmware | <CR><LF> OK<CR><LF> | The current active firmware has been successfully switched to Verizon. |
| AT#PING=8.8.8.8 | Sends a Ping Echo Request message to test network connectivity. Connection has been established if an IP Address and reply time is returned. | <CR><LF> #PING: 01,”8.8.8.8″,1,113<CR><LF> | #PING: <replyID>,<IpAddress>,<replyTime><ttl> <replyId> – Echo reply number. |
| AT#PING=wqdatalive.com | Sends a Ping Echo Request message to WQData LIVE. Connection confirms there is communication between the logger and wqdatalive.com. | <CR><LF> #PING: 01,”68.169.54.175″,1,50<CR><LF> | #PING: <replyID>,<IpAddress>,<replyTime><ttl> <replyId> – Echo reply number. |
| AT#SGACT? | Shows all available PDP contexts and their current states. Status 1 = Active Status 0 = Inactive | <CR><LF> #SGACT: 1,1<CR><LF> #SGACT: 2,0<CR><LF> #SGACT: 3,0<CR><LF> <CR><LF> OK<CR><LF> | #SGACT=<cid>,<status> |
| AT#SGACT=1,0 | Deactivates PDP context 1. | <CR><LF> OK<CR><LF> | — |
| AT#SGACT=1,1 | Activates PDP context 1. In a successful activation, a static or dynamic IP address should be returned. | <CR><LF> #SGACT: ‘IP Address'<CR><LF> <CR><LF> OK<CR><LF> | — |
| AT#SGACT=3,0 | Deactivates PDP context 3. | <CR><LF> OK<CR><LF> | — |
| AT#SGACT=3,1 | Activates PDP context 3. In a successful activation, a static or dynamic IP address should be returned. | <CR><LF> #SGACT: ‘IP Address'<CR><LF> <CR><LF> OK<CR><LF> | — |
| AT#SHDN | Disconnect from cellular network and shutdown. Wait up to 25 seconds before powering down. | <CR><LF> OK<CR><LF> | — |
| AT#SIMDET? | Check if the SIM is inserted. | <CR><LF> #SIMDET: 2,1<CR><LF> <CR><LF> OK<CR><LF> | 2,1 = SIM is inserted 2,0 = SIM is not inserted |
| AT$QCMIPGETP? | Displays the modem profile 0 = Disabled | <CR><LF> $QCMIPGETP: 0<CR><LF> <CR><LF> OK<CR><LF> | Profiles range from 0-5. |
| AT+CGDCONT? | Shows the list of currently defined PDP contexts. Use to see if the PDP context information is set correctly. | <CR><LF> +CGDCONT: 1,”IP”,”14476.mcs”,””,0,0 <CR><LF> +CGDCONT: 2,”IPV4V6″,”ims”,””,0,0 <CR><LF> +CGDCONT: 3,”IP”,”vzwinternet”,””,0,0 <CR><LF> <CR><LF> OK<CR><LF> | +CGDCONT:<cid>,<PDP Type>,<APN> |
| AT+CGREG? | Returns the registration status of the device. | <CR><LF> +CGREG: 0,2<CR><LF> <CR><LF> OK<CR><LF> | +CGREG: 0,0 – Not registered and not currently searching for a new operator. +CGREG: 0,1 – Registered, home network. +CGREG: 0,2 – Searching for a network. +CGREG: 0,3 – Registration denied. +CGREG: 0,5 – Registered, non-home network. |
| AT+CGSN | Returns the IMEI identification number of the modem. | <CR><LF> 358942053838661<CR><LF> <CR><LF> OK<CR><LF> | — |
| AT+CMEE=2 | Enables the report of a specific error instead of responding with a default ERROR response. This command should be sent before sending other AT commands to understand errors. | <CR><LF> OK<CR><LF> | — |
| Custom 1 | The Custom 1 command sends multiple commands automatically to activate the modem and set an HTTP connection to wqdatalive.com. It is the first step in confirming that cellular transmission is enabled. | <CR><LF> OK<CR><LF> <CR><LF> #SGACT: 10.27.15.98,<CR><LF> <CR><LF> OK<CR><LF> <CR><LF> OK<CR><LF> | Three “OK” responses are expected from three commands sent continuously:
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| Custom 2 | The Custom 2 command tests communication with WQData LIVE by seeing if data can be transmitted to the web. Communication is confirmed if a timestamp is returned. | <CR><LF> >>><CR><LF> OK<CR><LF> <CR><LF> #HTTPRING: 1,200,”application/json”,32<CR><LF> <CR><LF> <<<{“TStamp”:”2022-04-28 17:00:00″}<CR><LF> OK<CR><LF> | Three commands are sent to determine the connection:
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