BIPV8M-IAE
13
JCOM1 / JCOM2 / JCOM3: Serial port Connectors
The motherboard has Serial Port Connectors for connecting RS-232 Port.
JCOM1 supports RS-232/422/485 (Optional); JCOM2 and JCOM3 only supports
RS-232.
RS-232
RS-
422
RS-
485
Pin
Assignment
1
Carrier detect (DCD)
TX-
TX-
2
Received data (RXD)
TX
TX
3
Transmitted data (TXD)
RX
NC
4
Data terminal ready (DTR)
RX-
NC
5
Signal ground (GND)
GND
GND
6
Data set ready (DSR)
NC
NC
7
Request to send (RTS)
NC
NC
8
Clear to send (CTS)
NC
NC
J C O M 1
J C O M 2
J C O M 3
9 Ring
NC
NC
JSEL1/JSEL2: RS-232/422/485 Switch Headers (Optional)
The headers determine that JCOM1 belongs to RS-232 (Default), 422, or 485.
JSEL1
RS-232 RS-422
RS-485
1-3 3-5 3-5
2-4 4-6 4-6
7-9 9-11 9-11
8-10 10-12 10-12
JSEL2
1-2 RS-232
3-4 RS-422
5-6 RS-485
JSEL1 J SEL2
