Elfin-EG4X
用户手册
- 10 -
Pin
Description
Net Name Signal Type
Notes
4
NC
Please leave it open
5
UART_TX
RS232 Voltage
UART_TXD
O
RS232
6
UART_RX
RS232 Voltage
UART_RXD
I
RS232
7
Power VCC
VCC
Power
9
～
18VDC@1A
8
Power GND
GND
Power
9
Green LED
Net Status
Net
O
Boot On: Power is OK.
2s Off -> 2s On: cellular network Register
is OK.
0.1s Off -> 0.1s On: cellular network data
is transferring.
10
Amber LED
Data Transfer
Active
O
Off: No data transfer
0.3s Off -> 0.9s On: UART TX Output
0.3s Off -> 0.3s On: UART RX Receive
On: UART bidirection.
Restore to
Factory
nReload
I
Default high. Long press this button
("Low">3s) and loose to make the module
restore to factory setting.
2.3. Elfin-EG41 Pin Definition
Figure 4.
Elfin-EG41 RJ45 Interface Pin
Elfin-EG41 Interface Definition
Pin
Description
Net Name Signal Type
Notes
1
UART_TX
TTL Voltage
TTL_UART_
TXD
O
3.3V TTL UART Output
2
UART_RX
TTL Voltage
TTL_UART_
RXD
I
3.3V TTL UART Input
3
NC
Please leave it open
4
NC
Please leave it open
5
IO
RS485 A+
