Elfin-EG1X
用户手册
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2.3. Elfin-EG11 Pin Definition
Figure 4.
Elfin-EG11 RJ45 Interface Pin
Elfin-EG11 Interface Definition
Pin
Description
Net Name Signal Type
Notes
1
Debug TX
HOST_TXD
O
TTL Voltage
2
Debug RX
HOST_RXD
I
TTL Voltage
3
GPIO
GPIO
IO
Reserved
4
Restore to
Factory
nReload
I
Default high. Long press this button
("Low">3s) and loose to make the module
restore to factory setting.
5
UART1_TXD
IO
RS485 A+
6
UART1_RXD
RS485_B-
IO
RS485 B-
7
Power VCC
VCC
Power
9
～
18VDC
8
Power GND
GND
Power
9
Green LED
Net Status
Net
O
Boot On: Power is OK.
2s Off -> 2s On: GPRS Register is OK.
0.1s Off -> 0.1s On: GPRS 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.
<Notes>:
I
— Input; O — Output; Power—Power Supply
2.4. RS232 Interface
RS232 don
’t have hardware flow control function, and the physical voltage is
±
8V.
