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Chapter 2 Hardware Configuration
2-4. COM PORT CONNECTOR
There are four COM ports enhanced in this board namely: COM1,
COM2, COM3 and COM4.
RS-232, while COM2 is selectable for RS-232/422/485.
COM1 : COM1 Connector
The COM1 Connector assignments are as follows :
PIN
ASSIGNMENT
1
NDCDA
2
NSINA
3
NSOUTA
4
NDTRA
5
GND
6
NDSRA
7
NRTSA
8
NCTSA
9
RIN1
COM2 : COM2 Connector
The COM2 Connector assignments are as follows :
PIN
RS-232
1
NDCDB
2
NSINB
3
NSOUTB
4
NDTRB
5
GND
6
NDSRB
7
NRTSB
8
NCTSB
9
RIN2
Page: 2-6
COM1, COM3 and COM4 are fixed for
ASSIGNMENT
RS-422
RS-485
TX-
TX-
TX+
TX+
RX+
RX+
RX-
RX-
GND
GND
RTS-
NC
RTS+
NC
CTS+
NC
CTS-
NC
COM1
COM2
'
PC 5171 USER
S MANUAL
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