Vecow SPC-3000, Руководство пользователя

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57 GETTING TO KNOW YOUR SPC-3000/3500
Serial
Port
Pin No. RS-232 RS-422
(5-wire)
RS-422
(9-wire)
RS-485
(3-wire)
COM 2
COM 3
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 :
2.3.2 SPC-3020 Rear I/O & Functions
2.3.2.1 Power Terminal Block
COM 2 COM 3
COM 4 COM 5
Isolated
DIO
V+ V
DC-IN 9V-36V
SPC-3020 supports 9V to 36V DC power input.
Pin No. Definition Pin No. Definition
1 V+ 2 V-
3 Earth GND