Справочник Пользователя для Shanghai Simcom Ltd. 0606020080117
SIM345 EVB User Guide
SIM345-EVB_UGD_V1.02
15.02.2008
12
Auxiliary serial port (UART2):
Pin
Signal
I/O
Description
2 RXD2 O
Receive data
3 TXD2 I
Transmit data
5 GND
GND
3.6 Operating Status LED
Pin
Signal
Description
1 Flash
LED
Network status indication LED
2 Power
light
VBATT power supply status
indication
Figure 10: Flash LED
Working state of Flash LED as list:
State
Module function
Off
Module is not running
Permanent on
Module does not find the network
60ms On/ 3000ms +50%Off
Module find the network
60ms On/ 852ms +50% Off
GPRS communication