Quanmax QDSP-5000, Руководство пользователя

Страница: 22 / 42

Chapter 2
QDSP-5001 Series User’s Manual
22

COM ports
COM ports with the pin definitions.
Figure 7
COM Ports
COM1 RS-232 / 422 / 485 Port DB-9
Pin RS-232 RS-422 Half Duplex RS-485 Full Duplex RS-485
1 DCD TX DATA TX
2 RXD RX+ NA RX+
3 TXD TX+ DATA+ TX+
4 DTR RX NA RX
5 GND GND GND GND
6 DSR NA NA NA
7 RTS NA NA NA
8 CTS NA NA NA
9 RI / +5V* NA / +5V* NA / +5V* NA / +5V*
*
:Pin-9 can be set for +5V output in BIOS setup.
COM2 RS-232 / 422 / 485 Port DB-9
Pin RS-232 RS-422 Half Duplex RS-485 Full Duplex RS-485
1 DCD TX DATA TX
2 RXD RX+ NA RX+
3 TXD TX+ DATA+ TX+
4 DTR RX NA RX
5 GND GND GND GND
6 DSR NA NA NA
7 RTS NA NA NA
8 CTS NA NA NA
9 RI / +5V* NA / +5V* NA / +5V* NA / +5V*
*
:Pin-9 can be set for +5V output in BIOS setup.
COM 1 COM 2