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13
XPPC 22-100A User Manual
Chapter 2: Jumpers and Connectors
Connector Pin Definitions
External Connector
COM1 DB9 Male Connector
Connector type: DB-9 port, 9-pin D-Sub
Connector location: COM1
1
6
5
9
RS232
RS422
RS485
Pin
Definition
Pin
Definition
Pin
Definition
1
DCD
1
TX-
1
TR-
2
RXD
2
TX+
2
TR+
3
TXD
3
RX+
3
4
DTR
4
RX-
4
5
GND
5
5
6
DSR
6
6
7
RTS
7
7
8
CTS
8
8
9
RI
9
9