Star Network Modem
E70-DTU(433NW30-ETH)_User Manual
Chengdu Ebyte Electronic Technology Co., Ltd.
26
7.2 AT command error code
Error code
Instructions
-1
Invalid command format
-2
valid command format
-3
Invalid operator
-4
Invalid parameters
-5
Operation not allowed
Figure 30 AT instructions
7.3 AT command
When the serial port enters AT mode, it needs to open the serial port assistant, set the serial port (default parameter) baud
rate 115200, data bit 8 bit, stop bit 1 bit, open the serial port, input "+++" without carriage return. All parameter settings will
reply "\r\n+OK\r\n".
1
Enters” +++” into AT Command
+++
Parameter Description:
Null
Response:
Enter AT Mode
Example
：
+++
Note: 1. The AT command can be used only after entering the AT command mode
2. After entering the AT command mode, the AT command mode can be used again only after exiting the AT command
