Advantech HMI-640S user manual Port Address Default

Table 4-16: Serial port default settings

Port	Address	Default
COM1	3F8, 2F8, 3E8, 2E8	3F8/IRQ4
COM2	3F8, 2F8, 3E8, 2E8	2F8/IRQ3

The following table shows the pin assignments for the card's RS-232 port:

15

6 9

Table 4-17: COM1 RS-232 serial port connector

RS-232		CN4		RS-232		CN4
Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
1	DCD	18	CD1	6	DSR	20	DSR1
2	RX	19	RX1	7	RTS	15	RTS1
3	TX	17	TX1	8	CTS	14	CTS1
4	DTR	16	DTR1	9	RI	13	RI1
5	GND	37	GND
Table 4-18: COM2 RS-232 serial port connector
RS-232		CN4		RS-232		CN4
Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
1	DCD	23	CD2	6	DSR	21	DSR2
2	RX	22	RX2	7	RTS	27	RTS2
3	TX	24	TX2	8	CTS	26	CTS2
4	DTR	28	DTR2	9	RI	25	RI2
5	GND	40	GND

5 4 HMI-640S User's Manual