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CompuLab Ltd. FACE Modules HW Specifications Page 28 of 63
4.4.5 RJ-11 Serial Ports
The serial ports are arranged as COM ports differently on different motherboard configurations, as
detailed in Table 2. The physical locations of the ports are depicted in Figure 1.
Table 6 Serial Ports Arrangement
Motherboard
P1
P2
P3
P4
P5
P6
fit-PC3/
SBC-fitPC3
9
8
5
4
7
6
Intense-PC/
SBC-iSB
10
9
6
5
8
7
The pinout of RJ-11 serial ports is detailed in Table 3.
Table 7 RJ-11 Pinout
RS232
1
RS485
2
Pin #
3
Type
Functionality
Type
Functionality
1
O
RTS
O
TX-
2
-
GND
-
GND
3
O
TX
O
TX+
4
I
RX
I
RX+
5
-
GND
-
GND
6
I
CTS
I
RX-
Notes:
1. FM-SER is classified as DTE (Data Terminal Equipment) in terms of RS232 standard definition
2. FM-SER supports full duplex RS485
3. The port numbering is specified in Table 2
4.4.6 RJ-45 CAN Bus Pinout
Table 8 RJ-45 Pinout
Pin #
Type
Functionality
1
IO
CAN +
2
IO
CAN -
3
-
CAN GND
4
NC
NC
5
NC
NC
6
-
GND
7
PWR
CAN GND
8
PWR
CAN VCC
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