M66 Module Initialization

IoT Modules GSM Module
1

Hello,
Do you have an application note that concisely shows the recommended initialization sequence for the M66 modem? Both hardware and software (AT Commands)

E.g for the hardware:

  1. After power applied toggle PWR_KEY for at least 1 sec.
  2. Modem will start to respond to AT commands after 5 secs
    For the software:
  3. Following is the minimum AT command sequence:
  4. verify connected to GSM network via AT+CREG=2
  5. Verify SIM unlocked AT+CPIN?
  6. If using SMS format the SMS via AT+CNMI
  7. AT+CMGF
  8. Verify signal strength AT+CSQ
  9. Verify voltage and temperature regularly AT+CBC and AT+
  10. TCIP Sequence
  11. etc.

The idea is to ensure the minimum commands are sent.

This came up since I was unaware of CPIN when using the M95 module and it is mentioned to be an essential command. I dont want to miss anything basic

Thanks

2

Hi,
You can search for the document you want at the following URL:
https://www.quectel.com/download_zone/

3

Hi Winnie,
Thanks for the response, however I am unable to find any such document. Do you have such an Application Note? If so please share here.

4

Hi，
You can download it from the link below（The document is too large to be passed directly to you）：
https://www.quectel.com/download_zone/?s=M66&downloads-type=&post_type=download