Jrex plus lx user's guide – Kontron JRexplus-LX User Manual
Page 23
KTD-S0001-C
Page 19
Serial Port Interfaces
JRexplus LX User's Guide
The same connector X10 can be used as a RS-422 or RS-485 interface. The configuration is changeable in
the BIOS Setup.
Header
Pin
Signal RS-422
Signal RS-485
Function
1
TX-
TX- / RX-
Transmit data - / Receive data -
2
N.C.
N.C.
Not connected
3
RX+
N.C.
Receive data + / Not connected
4
N.C.
N.C.
Not connected
5
TX+
TX+ / RX+
Transmit data + / Receive data +
6
N.C.
N.C.
Not connected
7
RX-
N.C.
Receive data - / Not connected
8
N.C.
N.C.
Not connected
9
GND
GND
Ground
1
10
VCC
1)
VCC
1)
Power +5V
Note:
1)
To protect the external power lines of peripheral devices make sure that
- the wires have the right diameter to withstand the maximum available current.
- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.
Attention: A RS-422/RS-485 terminating resistor is not equipped on the JRexplus LX.