EVK-R4 - User guide

UBX-16029216 - R08

Starting up

Page 17 of 31

C1-Public

1.11 Enabling error result codes

Command sent by DTE (user)

DCE response (module)

Description

AT+CMEE=2

OK

Enables the cellular module to report verbose error result

codes.

1.12 PIN code insertion (when required)

Command sent by DTE (user)

DCE response (module)

Description

AT+CPIN="8180"

OK

Enter the PIN code, if needed (enter the PIN of the SIM

card – 8180 is written here as an example).

AT+CLCK="SC",0,"8180"

OK

Unlock the PIN at power-on (the last parameter is the PIN

of the SIM card – 8180 is written here as an example).

AT+CLCK="SC",1,"8180"

OK

Lock the PIN at power-on (the last parameter is the PIN of

the SIM card – 8180 is written here as an example).

1.13 Registration on a cellular network

Command sent by DTE (user)

DCE response (module)

Description

AT+CEREG?

+CEREG: 0,1

OK

Verify the network registration status.

AT+COPS?

+COPS: 0,0,"Verizon

Wireless",7

OK

Read the operator name and radio access technology

(RAT).

1.14 Switching off the EVK-R4

To switch off the EVK-R4, send the +CPWROFF AT command. Make sure to use this command before

switching off the main power, otherwise settings and configuration parameters may not be saved in

the internal non-volatile memory of the cellular module.