Specifications

44 SBC-656 User Manual
Serial ports (CN15, CN12)
The SBC-656 offers two serial ports, one RS-232 (CN15) and one
RS-232/422/485 (CN12). These ports allow you to connect them to
serial devices (mouse, printers, etc.).
COM2 RS-232/422/485 serial ports (CN12)
COM2 RS-232/422/485 serial port (CN2)
PIN SIGNAL PIN SIGNAL
COM2 1 DCDB 6 DSRB
(422TXD-/485DATA-)
2 RXDB 7 RTSB
(422RXD+)
3 TXDB 8 CTSB
(422TXD+/485DATA+)
4 DTRB 9 RIB
(422RXD-)
5 GND 10 N.C.
CN15
(COM1)
9
2
1
10
9
51
6
CN12
(COM2)