NB-IOT模块AT命令简要注释，通俗易懂

AT  检查AT命令端口有没问题，通不通

    返回AT，表示端口ok

AT+CPIN? PIN密码验证

    返回+CPIN:READY

    READY MT is not pending for any password

AT+CSQ 查询信号质量

    返回22,99 表示质量差不多

AT+CEREG? 查询网络注册状态

    返回+CEREG: 1, 1,"xxxx","xxxxxxxx",9，表示驻网成功。

AT+TUESTATS="RADIO" 查询当前小区环境

 

AT+CGDCONT=1,"IP","CMNBIOT" 设置APN

AT+CGACT=1,1 激活PDP

AT+CGPADDR 查询当前IP地址

AT+PING="xxx.xxx.xxx.xxx",20,64,3 ping主机"xxx.xxx.xxx.xxx"

备注AT手册相关命令定义

AT+CSQ

+CSQ: ,

+CME ERROR:

 

:

0 113 dBm or less

1 111 dBm

2. . . 30 109. . . 53 dBm

31 51 dBm or greater

99 not known or not detectable

 

(in percent):

0. . . 7 as RXQUAL values in the table in GSM

 

05.08 [20] sub clause 8.2.4

99 not known or not detectable