Quectel BG95 Series - GPIO Interfaces

LPWA Module Series
BG95&BG77&BG600L Series TCP/IP Application Note
BG95&BG77&BG600L_Series_TCP/IP_Application_Note 52 / 56
3.13. Getting the Last Error Code
OK
AT+QIOPEN=1,"TCP","220.180.239.212",8009,0,1 //Start a socket service but and <connectID>
is not present.
ERROR
AT+QIGETERROR
+QIGETERROR: 552, invalid parameters
OK