6. List of Supported AT Commands

This section provides a list of all AT commands that can be used for the
2N® SmartCom PRO configuration including their formats and brief function descriptions. Refer to the interface subsections for details. There is a reference to the dedicated subsection for each group of commands.

GSM CommandsSubs. 3.1
at^sccfg="mode",1The command sets the mode: TCPCLIENT, STANDALONE and DATA_OFF.
at^sccfg="gprs_apn","internet.open"The command sets the access APN to the mobile provider.
at^sccfg="gprs_user","internet"The command sets the user name for provider authentication.
at^sccfg="gprs_pass","hfsdj515d"The command sets the user password for provider authentication.
at^sccfg="local_ip"The command returns the IP address assigned by the provider.
at^sccfg="server_ip","90.182.112.54"Sets the Server IP address.
at^sccfg="server_port",1564Sets the SC Server port.
at^sccfg="auth_pass","xJ32ppp_v1"

The command sets the authorisation password for the above mentioned server.

at^sccfg="sim_pin","1156"
Sets the PIN.
at^sccfg="auth_ip",1

The command enables/disables IP address access authorisation.

at^sccfg="encrypt",1Sets the encryption mode.

at^sccfg="encrypt_key",

"E2978FE2978FE2978FE2978FE2978F20"

Sets the encryption key.
at^sccfg="save"

The command saves the changes.

at^sccfg="restart"

The command restarts the interface.

at^sccfg="srestart"

The command saves the changes and restarts the interface.

at^sccfg?The command displays the currently set values.
at^sccfg=?

The command displays the interface setting options.

at^sccfg="listenportcmd",10000The command specifies the listening port for IP access to the configuration port.
at^sccfg="listen_port1",10001The command specifies the listening port for IP access to port1.
at^sccfg="listen_port2",10002The command specifies the listening port for IP access to port2.
Port 1 (RS 232)Subs. 3.3
at^scport1="baudrate",115200

The command sets the baud rate to 115200 bps.

at^scport1="data_bits",8

The command sets the data bit count to 8.

at^scport1="stop_bits",2The command sets the stop bit count to 2.
at^scport1="parity",2The command sets the parity security type.
at^scport1="flowcontrol",1The command sets the flow control type.
at^scport1="save"

The command saves the changes.

at^scport1="restart"

The command restarts the interface.

at^scport1="srestart"

The command saves the changes and restarts the interface.

at^scport1?

The command displays the currently set interface values.

at^scport1=?

The command displays the interface setting options.

at^sc232tmclose=5

The command sets tmclose to 5 s.

at^sc232tmclose?

The command displays the current settings.

at^sc232tmclose=?

The command displays the setting options.

Port 2 (RS 485/M-Bus/RS-232)Subs. 3.3
at^scport2="baudrate",9600The command sets the baud rate to 9600 bps.
at^scport2="data_bits",8

The command sets the data bit count to 8.

at^scport2="stop_bits",2The command sets the stop bit count to 2.
at^scport2="parity",2The command sets the parity security type.
at^scport2="save"The command saves the changes.
at^scport2="restart"

The command restarts the interface.

at^scport2="srestart"

The command saves the changes and restarts the interface.

at^scport2?

The command displays the currently set interface values.

at^scport2=?

The command displays the interface setting options.

Relay OutputsSubs. 3.1
at^screl1?The commands detects the state of relay 1.
at^screl1=0

The command opens relay 1.

at^screl1=0,0

The command opens relay 1. The relay will be open upon the terminal restart.

at^screl1=0,1

The command opens relay 1. The relay will be closed upon the terminal restart.

at^screl1=0,2

The command opens relay 1.

Upon terminal restart, the relay will be in the state in which it was before restart.

at^screl1=1

The command closes relay 1.

at^screl1=1,0

The command closes relay 1. The relay will be open upon the terminal restart.

at^screl1=1,1

The command closes relay 1. The relay will be closed upon the terminal restart.

at^screl1=1,2

The command closes relay 1.

Upon terminal restart, the relay will be in the state in which it was before restart.

at^screl2?The commands detects the state of relay 2.
at^screl2=0

The command opens relay 2.

at^screl2=0,0

The command opens relay 2. The relay will be open upon the terminal restart.

at^screl2=0,1

The command opens relay 2. The relay will be closed upon the terminal restart.

at^screl2=0,2

The command opens relay 2.

Upon terminal restart, the relay will be in the state in which it was before restart.

at^screl2=1

The command closes relay 2.

at^screl2=1,0

The command closes relay 2. The relay will be open upon the terminal restart.

at^screl2=1,1

The command closes relay 2. The relay will be closed upon the terminal restart.

at^screl2=1,2

The command closes relay 2.

Upon terminal restart, the relay will be in the state in which it was before restart.

ADC – Input CircuitsSubs. 3.1
at^scadc1="get_value"The command performs measurement and sends the value measured.
at^scadc1="adc_value"

The command performs measurement and returns the value from the A/D converter.

at^scadc1="calib_min"Automatic interface calibration according to the currently measured value.
at^scadc1="calib_max"Automatic interface calibration according to the currently measured value.
at^scadc1="threshold_low",1200Manual calibration setting (minimum values).
at^scadc1="threshold_high",2500Manual calibration setting (maximum values).
at^scadc1="save"

The command saves the changes.

at^scadc1?

The command displays the currently set interface values.

at^scadc1=?

The command displays the interface setting options.

at^scadc2="get_value"The command performs measurement and sends the value measured.
at^scadc2="adc_value"

The command performs measurement and returns the value from the A/D converter.

at^scadc2="calib_min"

Automatic interface calibration according to the currently measured value.

at^scadc2="calib_max"Automatic interface calibration according to the currently measured value.
at^scadc2="threshold_low",1200Manual calibration setting (minimum values).
at^scadc2="threshold_high",2500Manual calibration setting (maximum values).
at^scadc2="save"

The command saves the changes.

at^scadc2?

The command displays the currently set interface values.

at^scadc2=?

The command displays the interface setting options.

at^scadc3="get_value"The command performs measurement and sends the value measured.
at^scadc3="adc_value"

The command performs measurement and returns the value from the A/D converter.

at^scadc3="calib_min"Automatic interface calibration according to the currently measured value.
at^scadc3="calib_max"Automatic interface calibration according to the currently measured value.
at^scadc3="threshold_low",1200Manual calibration setting (minimum values).
at^scadc3="threshold_high",2500Manual calibration setting (maximum values).
at^scadc3="save"

The command saves the changes.

at^scadc3?

The command displays the currently set interface values.

at^scadc3=?

The command displays the interface setting options.

at^scdin1="get_value"The command performs measurement and sends the value measured.
at^scdin1="adc_value"

The command performs measurement and returns the value from the A/D converter.

at^scdin1="calib_min"Automatic interface calibration according to the currently measured value.
at^scdin1="calib_max"Automatic interface calibration according to the currently measured value.
at^scdin1="threshold_low",200

Manual calibration setting (minimum values).

at^scdin1="threshold_high",250Manual calibration setting (maximum values).
at^scdin1="save"

The command saves the changes.

at^scdin1?

The command displays the currently set interface values.

at^scdin1=?

The command displays the interface setting options.

at^scdin2="get_value"The command performs measurement and sends the value measured.
at^scdin2="adc_value"

The command performs measurement and returns the value from the A/D converter.

at^scdin2="calib_min"Automatic interface calibration according to the currently measured value.
at^scdin2="calib_max"Automatic interface calibration according to the currently measured value.
at^scdin2="threshold_low",200

Manual calibration setting (minimum values).

at^scdin2="threshold_high",250Manual calibration setting (maximum values).
at^scdin2="save"

The command saves the changes.

at^scdin2?

The command displays the currently set interface values.

at^scdin2=?

The command displays the interface setting options.

at^scdin3="get_value"The command performs measurement and sends the value measured.
at^scdin3="adc_value"

The command performs measurement and returns the value from the A/D converter.

at^scdin3="calib_min"Automatic interface calibration according to the currently measured value.
at^scdin3="calib_max"Automatic interface calibration according to the currently measured value.
at^scdin3="threshold_low",200

Manual calibration setting (minimum values).

at^scdin3="threshold_high",250Manual calibration setting (maximum values).
at^scdin3="save"

The command saves the changes.

at^scdin3?

The command displays the currently set interface values.

at^scdin3=?

The command displays the interface setting options.

S0 – Pulse InputSubs. 3.1
at^scpulse1="state"The command identifies the current state.
at^scpulse1="get_value"The command reads out the counter state.
at^scpulse1="set_value",100The command sets the immediate pulse count.
at^scpulse1="stimer",60The command sets the EEPROM storing intervals for the counter value.
at^scpulse1="start"

The command starts counting on input 1.

at^scpulse1="stop"The command stops counting on input 1.
at^scpulse1="clear"The command resets the counter.
at^scpulse1="save"The command is used for manual value saving.
at^scpulse1?The command displays the currently set values.
at^scpulse1=?The command displays the setting options.
at^scpulse2="state"The command identifies the current state.
at^scpulse2="get_value"
The command reads out the counter state.
at^scpulse2="set_value",100

The command sets the immediate pulse count.

at^scpulse2="stimer",60The command sets the EEPROM storing intervals for the counter value.
at^scpulse2="start"

The command starts counting on input 2.

at^scpulse2="stop"The command stops counting on input 2.
at^scpulse2="clear"The command resets the counter.
at^scpulse2="save"The command is used for manual value saving.
at^scpulse2?The command displays the currently set values.
at^scpulse2=?The command displays the setting options.
at^scpulse3="state"The command identifies the current state.
at^scpulse3="get_value"
The command reads out the counter state.
at^scpulse3="set_value",100The command sets the immediate pulse count.
at^scpulse3="stimer",60The command sets the EEPROM storing intervals for the counter value.
at^scpulse3="start"

The command starts counting on input 3.

at^scpulse3="stop"

The command stops counting on input 3.

at^scpulse3="clear"The command resets the counter.
at^scpulse3="save"The command is used for manual value saving.
at^scpulse3?The command displays the currently set values.
at^scpulse3=?The command displays the setting options.
ETH SettingsSubs. 3.1
at^sceth="ip_method","DHCP"The command sets the IP address setting mode.
at^sceth="local_mac"The command writes out the currently used MAC address.
at^sceth="local_ip"The command writes out the currently used IPv4 address.
at^sceth="fixed_ip","192.168.1.1"

The command is used for manual IP address setting.

at^sceth="mask","255.255.255.0"

The command is used for manual network mask setting.

at^sceth="gateway","192.168.1.254"

The command is used for manual default gateway setting.

at^sceth="dns1","0.0.0.0"

The command is used for manual primary DNS setting.

at^sceth="dns2","0.0.0.0"

The command is used for manual secondary DNS setting.

at^sceth="save"

The command saves the changes.

at^sceth="restart"

The command restarts the Ethernet port.

at^sceth="srestart"

The command saves the changes and restarts the Ethernet port.

at^sceth?The command displays the currently set values.
at^sceth=?The command displays the setting options.
at^scchprim="GSM"The command sets the primary communication channel.
at^scchprim?The command displays the currently set values.
at^scchled1="GSM"The command sets the LED indicating function.
at^scchled1?The command displays the currently set values.

IP Address Access AuthorisationSubs. 3.9
at^sccfg="auth_ip",1

The command enables/disables IP address access authorisation.

at^scipauth="add","54.182.153.21"The command adds an IP address to the list.
at^scipauth="remove",2The command removes an IP address from the list.
at^scipauth="clear"

The command deletes all the addresses listed.

at^scipauth?The command displays the currently set values.
at^scipauth=?The command displays the setting options.
Port ForwardingSubs. 3.9
AT^SCPFWD="ADD","TCP",7007,"10.0.25.15",50554The command adds a rule to the list.
AT^SCPFWD="remove",2The command removes the selected rule from the list.
AT^SCPFWD="clear"

The command removes all rules from the list.

AT^SCPFWD?The command displays the currently set values.
AT^SCPFWD=?The command displays the setting options.

Real Time ClockSubs. 3.1
at^scclk?The command displays the current time.
at^scclk="RR/MM/DD,hh:mm:ss+ZZzz"The command sets the real time clock.
WM-Bus – Meter AdministrationSubs. 3.6

at^scwmbfilter="dev_add","MAN",12345678,01,07,600

The command adds a meter to the list. The reading interval is 600 s.

at^scwmbfilter="dev_add","MAN",12345678,01,07

The command adds a meter to the list and saves all messages.
at^scwmbfilter="dev_remove",1The command removes a meter from the list.
at^scwmbfilter="dev_clear"

The command clears the whole meter list.

at^scwmbfilter="key_add",1,A5B95C144134DE257AF2ED4F384C7EB7

The command sets the encryption key for meter 1.
at^scwmbfilter="key_remove",1The command removes a meter from the list.
at^scwmbfilter="cf_discard",1The command enables the mode where captured Compact Frame (CF) messages are discarded.

at^scwmbfilter="cf_discard"

The command displays the currently set value.
at^scwmbfilter="save"The command saves the set values, devices and keys into the device memory.
at^scwmbfilter="sniff"The command switches the WM-Bus module to the sniff mode and starts writing out received packets.

at^scwmbfilter?

The command displays the currently set meter list.

at^scwmbfilter=?

The command displays the Wireless M-Bus setting options.

WM-Bus – Interface Administration – Module 1Subs. 3.6

at^scwmbus1="mode",11

The command sets the operational mode for the device.

at^scwmbus1="mode"

The command displays the currently set value.

at^scwmbus1="rf_channel",1

The command sets the WM-Bus transmission channel.

at^scwmbus1="rf_channel"

The command displays the currently set value.

at^scwmbus1="rf_data_rate",1

The command defines the data framework size (for some modules only).

at^scwmbus1="rf_data_rate"

The command displays the currently set value.

at^scwmbus1="preamble_len",0

The command defines the framework format.

at^scwmbus1="preamble_len"

The command displays the currently set value.

at^scwmbus1="module_type"

The command displays information on the WM-Bus module.

at^scwmbus1="restart"

The command restarts the WM-Bus module.

at^scwmbus1?

The command displays the currently set interface values.

at^scwmbus1=?

The command displays the Wireless M-Bus setting options.
WM-Bus – Interface Administration – Module 2Subs. 3.6

at^scwmbus2="mode",11

The command sets the operational mode for the device.

at^scwmbus2="mode"

The command displays the currently set value.

at^scwmbus2="rf_channel",1

The command sets the WM-Bus transmission channel.

at^scwmbus2="rf_channel"

The command displays the currently set value.

at^scwmbus2="rf_data_rate",1

The command defines the data framework size (for some modules only).

at^scwmbus2="rf_data_rate"

The command displays the currently set value.

at^scwmbus2="preamble_len",0

The command defines the framework format.

at^scwmbus2="preamble_len"

The command displays the currently set value.

at^scwmbus2="module_type"

The command displays information on the WM-Bus module.

at^scwmbus2="restart"

The command restarts the WM-Bus module.

at^scwmbus2?

The command displays the currently set interface values.

at^scwmbus2=?

The command displays the Wireless M-Bus setting options.
AMSSubs. 3.8
AT^SCAMS=?The command writes out the list of commands of the AMS module control.
AT^SCAMS?The command writes out the contents of the device list to be served by the AMS module.
AT^SCAMS="ENABLE",1The command writes out the current enable/disable state of the AMS module.
AT^SCAMS="RETRY",5The command sets the value of the count of data reading attempts from the device.
AT^SCAMS="RETRY"The command identifies the currently set value of the count of data reading attempts.
AT^SCAMS="DEV_ADD",2,2,"128","1H"The command adds a device connected to port 2 to the list.
AT^SCAMS="DEV_ADD",128,"AIN_DIN","2/DIN","2H"The command adds a device connected to the A/D input port to the list.
AT^SCAMS="DEV_REMOVE",4The command removes the index 4 device from the device list.
AT^SCAMS="DEV_CLEAR"The command removes all devices from the device list.
AT^SCAMS="DEV_INTERVAL",3,"1H"The command changes the data reading interval to 1 hour for the index 3 device.
AT^SCAMS="DEV_INTERVAL","ALL","30M"The command changes the data reading interval to 30 minutes for all the devices listed in the device list.
AT^SCAMS="DIRECT_READ",2,1,"947833"The command performs immediate data reading from the defined device and writes out the data.
AT^SCAMSADD=2,2,"default","2h",3The command detects a device on the bus.
AT^SCDATA=?The command writes out the list of commands for data reading module control.
AT^SCDATA="MESS_CNT"The command reads the stored data records and returns the count of saved data records.
AT^SCDATA="GET_SPACE"The command returns the size of the available data record storing memory.
AT^SCDATA="GET_OLDEST",5The command provides bulk listing of 5 messages.

AT^SCDATA="GET_FILTERED",

"RECORD_TYPE==WMBUS"

The command writes out all the data records contained in the data record memory.
AT^SCDATA="DEL_OLDEST"The command deletes the oldest record.
AT^SCDATA="DEL_OLDEST",5The command deletes 5 oldest records.
AT^SCDATA="DEL_ALL"The command deletes all records in the data zone.

ZigBeeSubs. 3.7
AT^SCZB="ADD",00124B00042635C1,6The command adds a device to the list.
AT^SCZB?The command reads out the meter list.
AT^SCZB="DEL",4The command deletes the selected device from the list.
AT^SCZB="CLEAR"The command removes all devices from the list.
AT^SCZB="PANID",0458The command sets the network identifier to the value specified in the parameter.
AT^SCZB="PANID_READ"

The command reads out the current value of the PANID parameter.

AT^SCZB="CHANNEL",00001000The command sets the used channel to the value set by the parameter.
AT^SCZB="CHANNEL_READ"The command reads out the currently set value.
AT^SCZB="PRECFGKEY"[,<32 HEX>]
The command sets the pre-configured key for encrypted communication.
AT^SCZB="PRECFGKEY_ENABLE",1The command enables/disables sending of the encryption key.
AT^SCZB="TCLK"[,<32 HEX>]The command sets the encryption key for communication key negotiation and transmission.
AT^SCZB="IEEE_ADDR"

The command reads out and displays the ZigBee interface IEEE address.

AT^SCZB="MODULE_TYPE"

The command reads out and displays information on the module.

AT^SCZB="RESTART"

The command restarts the interface and creates a new PAN.

AT^SCZB="POLL",6The command reads out and updates the device list data for the defined device.
AT^SCZB="POLL_TIME",500The command reads out and updates the device list data for all devices automatically.
AT^SCZB="PERMIT_JOIN",2,60The command lets new devices join the network.
AT^SCZB="PERMIT_JOIN_ALL",120The command permits all the devices on the list to let new devices join the network.
AT^SCZB="ANLGVAL",<dev_id>,<EP>

The command reads out the value of the analogue input in a device on the selected end_point.

AT^SCZB="BASIC",<dev_id>,<EP>The command reads out all the values included in the BASIC cluster.
AT^SCZB="DEVTEMP",<dev_id>,<EP>

The command reads out the current device temperature.

AT^SCZB="FAN",<dev_id>,<EP>

The command returns the current state of the fan.

AT^SCZB="FAN_MODE",<dev_id>,<EP>,4

The command sets the fan mode to the defined value.

AT^SCZB="HMDT",<dev_id>,<EP>

The command returns the moisture value in % with the accuracy of 2 decimal places.

AT^SCZB="LC",<dev_id>,<EP>The command returns the Level Control value.
AT^SCZB="LC_MOVE_TO_LEVEL",<dev_id>,<EP>,50,10

The command sets the Level Control value (flap position).

AT^SCZB="METER",<dev_id>,<EP>The command writes out the immediate consumption values.
AT^SCZB="MSTVAL",<dev_id>,<EP>The command reads out the Multi State Value.
AT^SCZB="ONOFF",<dev_id>,<EP>

The command returns the 1/0 value depending on the immediate setting.

AT^SCZB="ONOFF_SET",<dev_id>,<EP>,1The command sets the switch to the value specified in the parameter.
AT^SCZB="TEMP",<dev_id>,<EP>

The command returns a temperature value in °C with the accuracy of two decimal places.

AT^SCZB="THERM",<dev_id>,<EP>

The command reads out and displays the currently set thermostat mode.

AT^SCZB="THERM_MODE",<dev_id>,<EP>,00The command sets the thermostat mode to the preset value.
AT^SCZB="THERM_TEMP_HEAT",<dev_id>,<EP>,20,00The command sets the temperature value for heating.
AT^SCZB="THERM_TEMP_COOL",<dev_id>,<EP>,20,00
The command sets the temperature value for cooling.
AT^SCZB="TIME",<dev_id>,<EP>

The command returns the currently set time value and time status.

AT^SCZB="TIME_SET",<dev_id>,<EP>,<utc_time>The command sets the device time to the value specified by the parameter.
AT^SCZB="GROUP_ADD",<dev_id>,<EP>,1,group1The command adds a device with the selected dev_id to the group defined in group_id.
AT^SCZB="GROUP_MEMBERSHIP",<dev_id>,<EP>,1

The command returns the YES string if the device defined in dev_id is assigned to the group defined in group_id.

AT^SCZB="GROUP_REMOVE",<dev_id>,<EP>,1

The command removes the device specified in dev_id from the group defined in group_id.

AT^SCZB="GROUP_REMOVE_ALL",<dev_id>,<EP>

The command removes the device specified in dev_id from all the groups.

AT^SCZB="SCENE_RECALL_ALL",<group_id>,<scene_id>The command starts the scenario defined in scene_id in all the devices in the group defined in group_id.
AT^SCZB="IDENTIFY",<dev_id>,<EP>For internal use only. Non-configurable!
AT^SCZB="IDENTIFY_START",<dev_id>,<EP>For internal use only. Non-configurable!
AT^SCZB="2NCST",<dev_id>,<EP>For internal use only. Non-configurable!
AT^SCZB="2NCST_WRITE",<dev_id>,<EP>For internal use only. Non-configurable!
SC PingSubs. 3.5
AT^SCPING="host","8.8.8.8"

The command sets the Host IP address to which the ICMP request shall be sent.

AT^SCPING="interval",5

Enter the interval in minutes. 0 means that periodical pings are deactivated.

AT^SCPING="test"The test command is used for testing configuration before saving.
AT^SCPING="save"

The command saves the changes.

AT^SCPING="restart"

The command restarts the function.

AT^SCPING="srestart"

The command saves the changes and resets the ping parameters immediately.

AT^SCPING?The command displays the currently set interface values.
AT^SCPING=?

The command displays the interface setting options.

User Defined FunctionsSubs. 3.5
AT^SCUDF="ADD","AIN1>=50:SMS P[+420123456789] m[alarm]"The command adds a condition to the condition list.
AT^SCUDF="CLEAR"

The command clears all conditions from the terminal memory.

AT^SCUDF="REMOVE",2

The command clears the condition with the selected ID.

AT^SCUDF? 

The command writes out all the conditions saved.

AT^SCUDF=?

The command displays the setting options.

AT^SCUDF="add","AIN1>50:SAVE"The command saves the condition.
AT^SCUDF="add","AIN1>50:REL1 r[1]"
The command switches the relay state.

AT^SCUDF="add","AIN1>50:SMS p[+420123456789]

 m[text 1]"

The command sends an SMS.

AT^SCUDF="add","AIN1>50:TCP i[62.134.22.87:8026]

m[text 1]"

The command sends a TCP message.
AT^SCUDF="add","AIN1>50:CNT1 d[1]"The command increments the counter.
General Commands 
ATNo action is executed and the OK response is always sent.
ATE

The command disables echo (to display just responses, not commands).

ATE0The command disables echo.
ATE1

The command enables echo.

at+cgmi

The command displays the device manufacturer – 2N Telekomunikace a.s.

at+cgmm

The command displays the device model.

at+cgmr

Displays the current firmware version: x.x.x.x.x

at+cgsn

The command displays the GSM module IMEI.

ATI

The command displays the device model.

ATI3

Displays the current firmware version: x.x.x.x.x

ATI4

The command displays the serial number.

ATI5The command displays the modules mounted in slots and their serial numbers.
ATO

The command switches the port into the transparent mode.

ATA

The command switches the port into the transparent mode.

ATH

The command terminates (rejects) an incoming TCP ringing.

ATS0?The command displays the state of automatic answering settings for incoming connections.
ATS0=5The command sets the count of rings before automatic answer.
at^sc232at=1The command sets the AT mode upon power up.
at^sc232at=?

The command displays the automatic AT mode switching setting options.

at^sccfgall?

The command displays the currently set values for all interfaces.

Other Commands – boot, state, service, others 

at^scupg="http://star.2n.cz/~fejfar/SmartCOM_SC_vxx.bin"

The command performs firmware upgrade.
at^screstartThe command restarts the given terminal.
at^scfresThe command performs Factory reset.
at^scop?The command displays the GSM provider.
at^scms?The command specifies the GSM module.
at^iccid?

The command displays the SIM card number (Integrated Circuit Card IDentifier).

at^scpras?

The command displays the remaining PIN entering attempts.

at^sig?

The command displays the signal intensity recalculated to dBm.

at^scerr?

The command writes out the error buffer state.

at^scerrclear

The command clears the error buffer.