Shandong USR IOT Technology Limited USRGM3 사용자 설명서
USR-GM3/GM3s User Manual
Jinan USR IOT Technology Limited
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tec@usr.cn
Meaning of led:
POWER
“on” means normal power supply, “off” means power supply failure.
WORK
“blink” means running correctly, “off” means not running.
GPRS
“on” means attached, “off” means attach failure.
LINKA
“on” means socket A has connected to server, “off” means not connect.
LINKB
“on” means socket B has connected to server, “off” means not connect.
DATA
“blink” means transmission, “off” means no transmission.
4.
Wait for LINKA led on, send data to module via serial port. For example, if you send
“www.usr.cn”, at the same time, the DATA led will be on for a while. Then, you will get
“www.usr.cn” in the receiving window from our test server.
“www.usr.cn”, at the same time, the DATA led will be on for a while. Then, you will get
“www.usr.cn” in the receiving window from our test server.