Vecow SPC-3000, Руководство пользователя

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58 GETTING TO KNOW YOUR SPC-3000/3500
©Vecow SPC-3000/3500 User Manual
2.3.2.2 Serial Port COM
COM 2 COM 3
COM 4 COM 5
Isolated DIO
V+ V
DC-IN 9V-36V
Serial port can be configured for RS-232, RS-422, or RS-485 with auto flow
control communication. The default definition is RS-232, but if you want to
change to RS-422 or RS-485, you can find the settings in BIOS.
BIOS Setting Function
COM 2
COM 3
COM 4
COM 5
RS-232
RS-422 (5-wire)
RS-422 (9-wire)
RS-485
RS-485 w/z auto-flow control
Serial
Port
Pin No. RS-232 RS-422
(5-wire)
RS-422
(9-wire)
RS-485
(3-wire)
COM 2
COM 3
COM 4
COM 5
1 DCD TXD- TXD- DATA-
2 RXD TXD+ TXD+ DATA+
3 TXD RXD+ RXD+ -----------
4 DTR RXD- RXD- -----------
5 GND GND GND GND
6 DSR ----------- RTS- -----------
7 RTS ----------- RTS+ -----------
8 CTS ----------- CTS+ -----------
9 RI ----------- CTS- -----------
The pin assignments are listed in the table as follow :