Elfin-EG46 User Manual
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Elfin-EG46 Interface Definition
Pin
Description
Net Name Signal Type
Notes
1
Ethernet TX+
TX+
O
Connect to Standard Ethernet RJ45 PIN1
2
Ethernet TX-
TX-
O
Connect to Standard Ethernet RJ45 PIN2
3
Ethernet RX+
RX+
I
Connect to Standard Ethernet RJ45 PIN3
4
Ethernet RX-
RX-
I
Connect to Standard Ethernet RJ45 PIN6
5
IO
6
RS485_B-
RS485_B-
IO
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
On: Ethernet connection OK
Off: No Ethernet connection
0.1s Off -> 0.1s On: UART data transfer
Restore to
Factory
nReload
I
Default high. Long press this button
("Low">3s) and loose to make the module
restore to factory setting.
<Notes>:
I
— Input; O — Output; Power—Power Supply
2.3. RS485 Interface
RS485 use two wire links, A(DATA+), B(DATA-). Connect A(+) to A(+), B(-) to B(-) for communication.
Suggest to connect GND together when interference is very severe.
The RS485 interface support maximum 32 485 device, device. The cable maximum length is 1200
meters. Need to add 120Ohm terminal resistor for over 300 meters.
2.4. Mechanical Size
The dimensions of Elfin-EG46 are defined as following pictures(mm):
