Hi, I am facing an issue with one of the EC200A-EU that it is not reporting the serial number, I have two of them, one is reporting but another is not βββββββββββββββ¬ββββββββββββββββββββ¬βββββββββββββββββββ β Command β Modem1 (ttyUSB2) β Modem2 (ttyUSB4) β βββββββββββββββΌββββββββββββββββββββΌβββββββββββββββββββ€ β AT+EGMR=0,5 β MP824HT0F0044240P β "" β βββββββββββββββΌββββββββββββββββββββΌβββββββββββββββββββ€ β AT+CGSN=0 β MP824HT0F0044240P β empty ββββββββββββββββ΄ββββββββββββββββββββ΄βββββββββββββββββββ
AT+CGMR for both : AT+CGMR
EC200AEUHAR01A30M16
OK
Modem2 has no serial stored in the module, so there is nothing to read back with either command.
Just wanted to confirm if this is an exception or a norm that serial number will not be listed? or any other specific command?