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RS232/422/485 Serial Port: COM5 / CANBus Port (Optional)
The serial port is a 16550A high speed communications port that sends/
receives 16 bytes FIFOs. It supports barcode scanners, barcode printers,
bill printers, credit card machine, etc.
17
17
PIN
1
2
3
4
5
6
7
8
9
This port can also work as an Controller Area Network (CANbus) port to
allow microcontrollers and devices to communicate with each other in
applications without a host computer.
Grounding Point
18
18
The Grounding Point is provided to connect a grounding wire.
16
Specifications
PIN
SIGNAL
1
NDCD
2
NSIN
3
NSOUT
4
NDTR
5
GND
6
NDSR
7
NRTS
8
NCTS
9
0V/5V/12V
RS422
SIGNAL
DESCRIPTION
422 TXD-
Transmit Data, Negative
422 RXD+
Receive Data, Positive
422 TXD+
Transmit Data, Positive
422 RXD-
Receive Data, Negative
GND
Signal Ground
NC
No Connection
NC
No Connection
NC
No Connection
NC
No Connection
1 1
5 5
6 6
9 9
RS232
DESCRIPTION
Data Carrier Detect
Signal In
Signal Out
Data Terminal Ready
Signal Ground
Data Set Ready
Request To Send
Clear To Send
Power Pin
PIN
SIGNAL
1
485 TXD-
2
485 TXD+
3
NC
4
NC
5
GND
6
NC
7
NC
8
NC
9
NC
RS485
DESCRIPTION
Transmit Data, Negative
Transmit Data, Positive
No Connection
No Connection
Signal Ground
No Connection
No Connection
No Connection
No Connection
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