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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
5
6
9
RS232
Pin
Definition
Pin
1
DCD
1
2
RXD
2
3
TXD
3
4
DTR
4
5
GND
5
6
DSR
6
7
RTS
7
8
CTS
8
9
RI
9
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RS422
RS485
Definition
Pin
Definition
TX-
1
TR-
TX+
2
TR+
RX+
3
RX-
4
5
6
7
8
9
13
XPPC 22-100A User Manual
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