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February, 2019
eMAX-LP4502-Man
Page 6 of 20
Jumpers and Jacks:
The eMAX-LP4502 processor hardware interface is configured using jumpers to setup the reader port
power and end of line termination.
JUMPERS SET AT
DESCRIPTION
J2
N/A
10 Base-T/100Base-Tx Ethernet Connection (Port
0)
J5
OFF
Port 2 RS-485 EOL Terminator is Off
ON
Port 2 RS-485 EOL Terminator is On
J7
Reader Power Select. See Note 2
12V
12 Vdc at Reader Ports
PASS
VIN "Pass Through" to Reader Ports
J6
N/A
Micro USB port (2.0)
J8
N/A
microSD Card
J9
OFF
Port 1 RS-485 EOL Terminator is Off
ON
Port 1 RS-485 EOL Terminator is On
Note 2:
Install jumper J7 in the 12V position
ONLY
if the input voltage (VIN) is greater than 20
VDC ! Failure to do so may damage the reader or the eMAX-LP4502 !