User’s Guide
Pin Assignments
B-6
RS-232 Connector (COM1)
Pin no.
Signal
1
DCD
2
RX
3
TX
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
10
N.C.
RS-232/422/485 Connector (COM2)
Pin no.
RS232
RS422
RS485
1
DCD
TX-
DATA-
2
DSR
RTS +
3
RX
TX+
DATA+
4
RTS
RTS -
5
TX
RX+
6
CTS
CTS +
7
DTR
RX-
8
RI
CTS -
9
GND
GND
10
N.C.
N.C.