PCA-6781 User Manual 50
B.1.14COM port 1 (RS-232)(CN15)
B.1.15COM port 2 (RS-232/422/485)(CN14)
B.1.16ATX Power Connector (CN16)
B.1.17KB/MS Connector (CN19)
Table B.13: COM port 1 (RS-232) (CN15)
Pin Signal Pin Signal
1 DCD# 2 RXD
3TXD 4DTR#
5GND 6DSR#
7RTS# 8CTS#
9RI#
Table B.14: COM port 2 (RS-232/422/485) (CN14)
Pin Signal Pin Signal
1 DCD 2 DSR
3RXD 4RTS
5TXD 6CTS
7DTR 8RI
9GND 10GND
11 TXD485+ 12 TXD485-
13 RXD485+ 14 RXD485
Table B.15: ATX Power Connector (CN16)
Pin Signal Pin Signal
1+5 V 2GND
3GND 4+12 V
5NC 6GND
7+5 V
Table B.16: KB/MS Connector (CN19)
Pin Signal Pin Signal
1 KBDATA 2 MSDATA
3GND 4+5V
5 KBCLK 6 MSCLK
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