Specifications

TME-104-CLR-LX800-R1V3.doc Rev. 1.3 25(53)
COM1/2
Connector type IDC10 pin header 2.54 mm
Pin RS232 RS485 Pin RS232 RS485
1 DCD Not used 2 DSR RXD+
3 RXD RXD- 4 RTS TXD+
5 TXD TXD- 6 CTS Not used
7 DTR Not used 8 Not used Not used
9 GND GND 10 +5 Volts +5 Volts
RS485-Termination Jumpers
Connector type IDC12 pin header 2.00 mm
Use 2 mm jumpers to terminate lines correctly.
There are two jumpers COM1 and COM2, respectively.
The RS485 termination jumpers are located at the
bottom of the printed circuit board, see chapter
172H2.2
When the jumper is set, the differential pairs
are terminated with 120Ω between them.
(e.g. RX+ and RX-, on the right picture)
Additionally, positive/negative receive lines are pulled
up/down with 10kΩ to 5V/GND in order to protect the
transceivers of the Cool LiteRunner-LX800 from over voltages.
It is recommended to protect the ports of the external device in the same way!
Caution: Termination Resistors should not be used in RS232 Mode!
Otherwise, the serial ports will not work.
Pin Signal Pin Signal
1 TX+_COM1 2 TX-_COM1
3 RX+_COM1 4 RX-_COM1
5 TX+_COM2 6 TX-_COM2
7 RX+_COM2 8 RX-_COM2
9 TX+_COM3 10 TX-_COM3
11 RX+_COM3 12 RX-_COM3
+5V
GND
10K
10K
120
Jumper
RX+
RX-
Module
side
External
device