Com2 [rs232/422/485 – Maple Systems PC110CF User Manual
Page 18
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PC100 Series Operation Manual
1010-1022 Rev. 01
COM2 [RS232/422/485]
Pinout
Pin #
RS232
RS422
RS485
1
DCD
Tx-
Tx-
2
RxD
Tx+
Tx+
3
TxD
Rx+
Rx+
4
DTR
Rx-
Rx-
5
GND
GND
GND
6
DSR
RTS-
Not used
7
RTS
RTS+
Not used
8
CTS
CTS+
Not used
9
Not Used
Not used
Not used
Configuring for RS232, RS422 or RS485
COM2 is configurable as RS232, RS422 or RS485 by configuring jumpers. To do this, jumper pins must be
configured at JP3 for the PC110C.
Configuring Jumpers
Jumpers consist of two or three metal pins with a plastic base mounted on the card. Using a jumper cap, it is
possible to connect the pins. Hardware is set up by opening or closing jumper pins.
Jumper
Definition
Representation in Diagram
2 pin jumper
3 pin jumper