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INSTALLATIONS
J15, J12: COM1 / COM2 Serial Ports
J15 (COM1) is a DB-9 connector, while J12 (COM2) is a 10-pin header.
Refer to the table below for their pin assignments.
COM1
Signal Name
DCD, Data carrier detect
RXD, Receive data
TXD, Transmit data
DTR, Data terminal ready
Ground
COM2
Pin #
1
2
3
4
5
Pin #
6
7
8
9
10
Signal Name
DSR, Data set ready
RTS, Request to send
CTS, Clear to send
RI, Ring indicator
Not Used
J12 (COM2) is jumper selectable for RS-232, RS-422 and RS-485.
Pin #
RS-232
1
2
3
4
5
6
7
8
9
10
DCD
RX
TX
DTR
Ground
DSR
RTS
CTS
RI
NC
Signal Name
R2-422
RS-485
TXTX+
RX+
RXGround
RTSRTS+
CTS+
CTSNC
I815E User’s Manual
DATADATA+
NC
NC
Ground
NC
NC
NC
NC
NC
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