
USR-K6 User Manual www.usriot.com
Jinan USR IOT Technology Limited 81 / 107 [email protected]
Diagram 5.3.1-1 Enter the AT Command
Instr: if no feedback after fill “++++”and “a”, as the above.
Fill “+++”and “a” need to achieve in the time to reduce the chance of entering command mode while working
normally accidentally. Detail requirement are as fellows.
Diagram 5.3.1-2 Time Tree
Time requirement:
T1>the interval of serial port package
T2<300ms
T3<300ms
T5<3s
The order change into temporary command mode from transparent transport mode: