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54 HMI-640S User's Manual
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:
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
1
5
9
6